<h3> 亲爱的小朋友们，疫情当前，让我们同舟共济，共度时艰。虽然我们现在还不能走进科学课堂，但老师已经为小朋友们挑选了一些有趣的小实验，这些小实验利用生活中常见物品就可以完成。在实验中，小朋友们可以感受到生活处处皆科学。</h3> <h1><b><font color="#167efb">区分生熟鸡蛋</font></b></h1> <h3><b><i><font color="#b04fbb">材料</font></i></b></h3> <section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; text-align: center; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">生鸡蛋/熟鸡蛋</span><br style="max-width: 100%; overflow-wrap: break-word !important;"></h3></section></section></section><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; text-align: center; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">（为了更好区分，我们在两个鸡蛋上画笑脸和哭脸）</span></h3></section></section></section> <h3><b><i><font color="#b04fbb">步骤</font></i></b></h3> <p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: center; white-space: normal; overflow-wrap: break-word !important;"><span style="max-width: 100%; letter-spacing: 0px; line-height: 1.6; overflow-wrap: break-word !important;">-1-</span><br style="max-width: 100%; overflow-wrap: break-word !important;"></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: center; white-space: normal; overflow-wrap: break-word !important;">将笑脸鸡蛋<span style="max-width: 100%; letter-spacing: 0px; overflow-wrap: break-word !important;">转起来</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: center; white-space: normal; overflow-wrap: break-word !important;"><span style="max-width: 100%; letter-spacing: 0px; overflow-wrap: break-word !important;">用手将其静止</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: center; white-space: normal; overflow-wrap: break-word !important;"><span style="max-width: 100%; letter-spacing: 0px; overflow-wrap: break-word !important;">观察静止后，鸡蛋是否还在继续旋转</span></h3><h3><span style="max-width: 100%; letter-spacing: 0px; overflow-wrap: break-word !important;"><br></span></h3> <p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: center; white-space: normal; overflow-wrap: break-word !important;"><span style="letter-spacing: 0px;">-2-</span><span style="max-width: 100%; letter-spacing: 0px; line-height: 1.6; overflow-wrap: break-word !important;"></span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: center; white-space: normal; overflow-wrap: break-word !important;">将哭脸鸡蛋以同样的方式转起来</h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: center; white-space: normal; overflow-wrap: break-word !important;">用手将其静止</h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: center; white-space: normal; overflow-wrap: break-word !important;">观察静止后，哭脸鸡蛋是否会继续旋转</h3><h3><br></h3> <h3><b><i><font color="#b04fbb">原理</font></i></b></h3> <h3><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: justify; white-space: normal;">当我们用手指轻轻触碰旋转中的鸡蛋并使之停止时，因为熟鸡蛋内外都是固体，所以蛋的内部会随着外壳的停止而停止；而生鸡蛋，虽然外壳会立刻停止旋转，但</span><strong style="max-width: 100%; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;">内部的液体会因为惯性继续旋转，所以</strong><strong style="max-width: 100%; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;">即使离开手指，它仍会维持旋转状态，从而牵引着外壳恢复旋转</strong><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: justify; white-space: normal;">。</span><br></h3> <h1><b><font color="#167efb">举重鸡蛋</font></b></h1> <h3><b><i><font color="#b04fbb">材料</font></i></b></h3> <h3><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 15px; letter-spacing: 2px; text-align: center; white-space: normal;">鸡蛋/固定胶带/砖头</span><br></h3> <h3><b><i><font color="#b04fbb">步骤</font></i></b></h3> <section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; font-size: 12px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; text-align: center; letter-spacing: 2px; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; background-color: rgb(106, 187, 189); font-size: 15px; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">-第一步-</strong></span></h3></section></section></section><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; white-space: normal; text-align: center; font-size: 14px; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">将鸡蛋竖直，两端用胶带套住</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; white-space: normal; text-align: center; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">确保鸡蛋两端不会露出胶带卷</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; white-space: normal; text-align: center; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">然后将其竖直放置在平面上</span></h3><div><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;"><br></span></div></section></section> <section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; font-size: 12px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; text-align: center; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; background-color: rgb(106, 187, 189); font-size: 15px; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">-第二步-<br style="max-width: 100%; overflow-wrap: break-word !important;"></strong></span></h3></section></section></section><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; text-align: center; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">将砖块放在鸡蛋上</span></h3></section></section></section> <h3><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 15px; letter-spacing: 0.544px; text-align: center; white-space: normal;">通过增加砖块个数逐渐增加鸡蛋承重</span><br></h3> <section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; font-size: 12px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; text-align: center; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; background-color: rgb(106, 187, 189); font-size: 15px; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">-第三步-<br style="max-width: 100%; overflow-wrap: break-word !important;"></strong></span></h3></section></section></section><section class="" style="max-width: 100%; transform: translate3d(0px, 0px, 0px); text-align: right; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; text-align: center; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">检测鸡蛋的极限承重</span></h3></section></section></section> <p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 12px; letter-spacing: 2px; white-space: normal; text-align: center; line-height: 1.75em; overflow-wrap: break-word !important;">注意事项</h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 12px; letter-spacing: 2px; white-space: normal; text-align: center; line-height: 1.75em; overflow-wrap: break-word !important;">实验过程中需要爸妈陪伴<br style="max-width: 100%; overflow-wrap: break-word !important;"></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 12px; letter-spacing: 2px; white-space: normal; text-align: center; line-height: 1.75em; overflow-wrap: break-word !important;">为了防止鸡蛋破碎漏出</h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 12px; letter-spacing: 2px; white-space: normal; text-align: center; line-height: 1.75em; overflow-wrap: break-word !important;">最好事先在鸡蛋下垫入旧报纸方便收拾</h3> <h3><b><i><font color="#b04fbb">原理</font></i></b></h3> <section class="" style="padding-right: 9px; padding-left: 9px; max-width: 100%; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.544px; text-align: justify; white-space: normal; display: inline-block; width: 306px; vertical-align: top; box-shadow: rgb(0, 0, 0) 0px 0px 0px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 1px; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">通过上面的实验我们发现，鸡蛋看起来小小的又很脆弱，但它小小的身体里可是蕴藏着大能量，承重力非常强大，当我们持续往鸡蛋上施加约2.3千克的砖头，总承重力在11.5千克时，鸡蛋仍然保持完好无损的状态。</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 1px; overflow-wrap: break-word !important;"><br style="max-width: 100%; overflow-wrap: break-word !important;"></h3></section><p style="margin-right: 8px; margin-left: 8px; max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; text-align: justify; white-space: normal; letter-spacing: 1px; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">不就是一个小小的鸡蛋吗，怎么会如此坚硬，难道鸡蛋里有一层坚不可摧的盔甲？其实秘密就在于鸡蛋表面不到2毫米的小薄壳，蛋壳外形的结构能够通过精妙的弧度，将压力分散到蛋壳的每一部分。<br style="max-width: 100%; overflow-wrap: break-word !important;"></span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; text-align: justify; white-space: normal; letter-spacing: 1px; overflow-wrap: break-word !important;"><br style="max-width: 100%; overflow-wrap: break-word !important;"></h3><p style="margin-right: 8px; margin-left: 8px; max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; text-align: justify; white-space: normal; letter-spacing: 1px; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">以下图为例进行分析，鸡蛋受到竖直向下的重力，由于蛋壳的特殊形状，受力点A不能向下移动，而只能以分力F1、F2挤压B和C处，以此类推，B、C也会对相邻区域施加相同的作用力，这样重力就会被分散。鸡蛋壳的拱形结构使得鸡蛋能承受较大的压力。</span></h3> <h3><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 15px; letter-spacing: 1px; text-align: justify; white-space: normal;">蛋壳的这种结构被称为薄壳结构，特点就是用曲度均匀、轻盈却耐压，除了贝壳、龟壳之外，建筑学中这一原理也被大量采用。比如孩子们比较熟悉的赵州桥的拱形结构就利用这一原理矗立了千年。</span><br></h3> <section class="" style="max-width: 100%; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 1px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><p style="margin-right: 8px; margin-left: 8px; max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">在国外，从20世纪中期开始，薄壳结构型建筑就进入了飞速发展期，因为轻盈易建造，用经济有限的材料就能够建造出牢固又充满设计感的屋顶，越来越多的拱形建筑被建造出来。</span></h3><div><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;"><br></span></div></section> <h1><b><font color="#167efb">彩色雨滴</font></b></h1> <h3><b><i><font color="#b04fbb">材料</font></i></b></h3> <h3><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: justify; white-space: normal;">色素、杯子、一杯水、小木棒、油</span><br></h3> <h3><b><i><font color="#b04fbb">步骤</font></i></b></h3> <h3><span style="max-width: 100%; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; white-space: normal; overflow-wrap: break-word !important;">第一步，往</span><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; white-space: normal;">杯子里倒入适量的食用油。</span><br></h3> <h3><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; white-space: normal;">第二步，往水杯中倒入色素。</span><br></h3> <h3><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; white-space: normal;">第三步，将色素和油用小木棒搅拌均匀。</span><br></h3> <h3><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; white-space: normal;">第四步，将油和色素的混合物倒入水中，静置一会。</span><br></h3> <h3><section class="" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important;"><section class="" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important;"></section></section></section></h3><section class="" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important;"><section class="" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important;"><p style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important; clear: both; min-height: 1em;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-size: 14px;">第五步，然后就可以看到杯子里面开始飘落漂亮的雨滴咯。</span></h3></section></section></section> <h3><b><i><font color="#b04fbb">原理</font></i></b></h3> <p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.544px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;"> 该实验涉及到相似相溶原理，“相似”是指溶质与溶剂在结构上相似，“相溶”是指溶质与溶剂彼此互溶。对于气体和固体溶质来说，“相似相溶”也适用。</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.544px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;"> 由于油和水的性质不同，</span><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">所以不能相溶。</span><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">又因为油的密度比水小，</span><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">所以油会浮在在水上面 。</span><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">而色素即可以溶于油又可以溶于水，</span><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">于是在由于地球的吸引而产生的力——重力的作用下产生了该效果。</span></h3> <h1><b><font color="#167efb">自制蛋糕奶油</font></b></h1> <h3><b><i><font color="#b04fbb">材料</font></i></b></h3> <h3><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 15px; letter-spacing: 2px; text-align: center; white-space: normal;">软刮板/碗/淡奶油/筷子/蛋糕/白糖/搅拌器</span><br></h3> <h3><b><i><font color="#b04fbb">步骤</font></i></b></h3> <section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; font-size: 12px; color: rgb(0, 0, 0); overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; text-align: center; letter-spacing: 2px; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; background-color: rgb(255, 202, 0); font-size: 15px; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">-第一步-<br style="max-width: 100%; overflow-wrap: break-word !important;"></strong></span></h3></section></section></section><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; text-align: center; font-size: 14px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 2px; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">将淡奶油和白糖倒进碗中</span></h3></section></section></section> <section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; font-size: 12px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; text-align: center; letter-spacing: 2px; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; background-color: rgb(255, 202, 0); font-size: 15px; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">-第二步-<br style="max-width: 100%; overflow-wrap: break-word !important;"></strong></span></h3></section></section></section><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; text-align: center; font-size: 14px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 2px; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">用搅拌器搅拌</span></h3></section></section></section> <section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; font-size: 12px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; text-align: center; letter-spacing: 2px; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; background-color: rgb(255, 202, 0); font-size: 15px; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">-第三步-<br style="max-width: 100%; overflow-wrap: break-word !important;"></strong></span></h3></section></section></section><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; text-align: center; font-size: 14px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 2px; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">几分钟后液态的淡奶油变成了固态</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 2px; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">把碗倒扣也倒不下来</span></h3></section></section></section> <section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; font-size: 12px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; text-align: center; letter-spacing: 2px; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; background-color: rgb(255, 202, 0); font-size: 15px; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">-第四步-<br style="max-width: 100%; overflow-wrap: break-word !important;"></strong></span></h3></section></section></section><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; text-align: center; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 2px; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">将香甜的奶油抹在蛋糕上</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 2px; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;">送给可爱的小朋友吃吧！</span></h3></section></section></section> <h3><b><i><font color="#b04fbb">原理</font></i></b></h3> <p style="max-width: 100%; clear: both; min-height: 1em; text-align: justify; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; letter-spacing: 2px; overflow-wrap: break-word !important;">淡奶油打发的主要原理是脂肪的<strong style="max-width: 100%; overflow-wrap: break-word !important;">乳化作用</strong>，</span><span style="max-width: 100%; font-size: 15px; letter-spacing: 2px; overflow-wrap: break-word !important;">乳化是将一种液体分散到另一种不相溶的液体中去的过程。</span><br style="max-width: 100%; overflow-wrap: break-word !important;"></h3></section><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;"><br style="max-width: 100%; overflow-wrap: break-word !important;"></h3></section><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 2px; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;"><span style="max-width: 100%; overflow-wrap: break-word !important;">本次实验中的淡奶油属于水包油O/W体系（内相为油，外相为水。如：人乳、牛奶）。</span></span></h3></section></section></section> <p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; text-align: justify; white-space: normal; letter-spacing: 2px; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;"><span style="max-width: 100%; overflow-wrap: break-word !important;">经过搅打，乳脂肪球膜破坏，里面的乳脂肪流出来，连接成片，反而将水包裹，形成油包水W/O体系（内相为水,外相为油。如：油状化妆）。</span></span></h3><h3><span style="max-width: 100%; font-size: 15px; overflow-wrap: break-word !important;"><span style="max-width: 100%; overflow-wrap: break-word !important;"><br></span></span></h3> <h3><section class="" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important;"><section class="" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important;"><section style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><section class="" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important;"><section class="" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important;"></section></section></section></section></section></section></section></h3><section class="" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important;"><section class="" style="margin: 0px; padding: 0px 9px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important; display: inline-block; width: 324px; vertical-align: top; box-shadow: rgb(0, 0, 0) 0px 0px 0px;"><section class="" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important;"><section class="" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important; text-align: justify; font-size: 14px;"><p style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important; clear: both; min-height: 1em; white-space: normal; letter-spacing: 2px; line-height: 1.75em;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-size: 15px;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);">通过这样的转化，奶油流变学特性发生很大改变，可塑性增强，看起来有点像固体。</span></span></h3></section></section></section></section></section></section> <h1><b><font color="#167efb">离心现象</font></b></h1> <h3><b><i><font color="#b04fbb">材料</font></i></b></h3> <h3><span style="color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: center; white-space: normal;">小块橡皮泥/大块橡皮泥/吸管/细线</span><br></h3> <h3><b><i><font color="#b04fbb">步骤</font></i></b></h3> <section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; text-align: center; overflow-wrap: break-word !important;">-1-<br style="max-width: 100%; overflow-wrap: break-word !important;"></h3></section></section></section><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; text-align: center; font-size: 14px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">将细线穿过吸管</h3></section></section></section> <section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; text-align: center; overflow-wrap: break-word !important;">-2-<br style="max-width: 100%; overflow-wrap: break-word !important;"></h3></section></section></section><h3><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"></section></section></section></h3><section class="" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important;"><section class="" style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important; text-align: center; font-size: 14px;"><p style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important; clear: both; min-height: 1em;">把两块橡皮泥搓成大小两个球分别固定在细线两端</h3></section></section></section> <section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; text-align: center; overflow-wrap: break-word !important;">-3-<br style="max-width: 100%; overflow-wrap: break-word !important;"></h3></section></section></section><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; text-align: center; font-size: 14px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">将粘有大块橡皮泥的一端放在下方，发现小橡皮泥被拉了上去</h3></section></section></section> <section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; text-align: center; overflow-wrap: break-word !important;">-4-<br style="max-width: 100%; overflow-wrap: break-word !important;"></h3></section></section></section><section class="" style="max-width: 100%; overflow-wrap: break-word !important;"><section class="" style="max-width: 100%; text-align: center; font-size: 14px; overflow-wrap: break-word !important;"><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">摆动手腕向上旋转小块橡皮泥球</h3><p style="max-width: 100%; clear: both; min-height: 1em; overflow-wrap: break-word !important;">发现细绳慢慢将大块橡皮泥球拉了起来</h3></section></section></section> <h3><b><i><font color="#b04fbb">原理</font></i></b></h3> <p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; letter-spacing: 0.544px; text-align: justify; white-space: normal; overflow-wrap: break-word !important;">做圆周运动的物体，由于本身的惯性，总有沿着圆周切线方向飞去的倾向，<span style="max-width: 100%; overflow-wrap: break-word !important;">使</span><strong style="max-width: 100%; overflow-wrap: break-word !important;"><span style="max-width: 100%; overflow-wrap: break-word !important;">旋</span><span style="max-width: 100%; letter-spacing: 0px; overflow-wrap: break-word !important;">转的物体远离它的旋转中心</span></strong>，这种现象称为<strong style="max-width: 100%; overflow-wrap: break-word !important;">离心现象</strong>。<span style="max-width: 100%; letter-spacing: 0px; overflow-wrap: break-word !important;">实验中小块的橡皮泥在快速</span><span style="max-width: 100%; letter-spacing: 0px; overflow-wrap: break-word !important;">转动</span><span style="max-width: 100%; letter-spacing: 0px; overflow-wrap: break-word !important;">，不断远离旋转中心，产生的力通过绳</span><span style="max-width: 100%; letter-spacing: 0px; overflow-wrap: break-word !important;">子作用到下面的大块橡皮泥</span><span style="max-width: 100%; letter-spacing: 0px; overflow-wrap: break-word !important;">上，产生向上的拉力。所以下面</span><span style="max-width: 100%; letter-spacing: 0px; overflow-wrap: break-word !important;">的大球就被小球用绳子拽起来喽。</span></h3><h3><span style="max-width: 100%; letter-spacing: 0px; overflow-wrap: break-word !important;"><br></span></h3> <h1><b><font color="#167efb">火山喷发</font></b></h1> <h3> 在这段特殊的日子里，让我们的科学小实验陪伴你们一起成长，快快行动起来，你就是下一个“科学小战士”！</h3> <h3>策划：陈国景</h3><h3>编辑：谭硕</h3><h3>审阅：史文静</h3>