<p class="ql-block">准备材料:白醋,自来水,筷子,色素,大米,小苏打,透明杯子。</p><p class="ql-block">实验步骤:</p><p class="ql-block">1.将杯子里倒入自来水,小半杯就可以了。</p><p class="ql-block">2.加点色素与小苏打,搅拌均匀。</p><p class="ql-block">3.将杯子中放入少量米粒</p><p class="ql-block">4.观察大米状态,大米是沉淀状态</p><p class="ql-block">5.加入白醋</p><p class="ql-block">6.观察大米状态,杯子里除了好多气泡,米粒也起伏不定,就像快乐的小姑娘翩翩起舞一样。</p><p class="ql-block">科学原理:小苏打和醋在一起会发生化学反应 ,生成二氧化碳气泡。随着气泡附着在大米的表面,米粒随之上升。一旦它到达水面,气体释放后,大米有下沉了。</p><p class="ql-block"><br></p> <p class="ql-block"><a href="https://www.meipian.cn/4o6ptyvb?first_share_to=group_singlemessage&share_depth=1&first_share_uid=102676435#" target="_blank">胡晨茜同学</a></p> <p class="ql-block"><a href="https://www.meipian.cn/4ny5alxw?first_share_to=group_singlemessage&share_depth=1&first_share_uid=81429833#" target="_blank">徐佳韵同学</a></p> <p class="ql-block"><a href="https://www.meipian.cn/4nxszlzx?share_from=self&share_to=group_singlemessage&user_id=356429996&uuid=1715190ffbe75ab59d8ac90a70f8924b&share_depth=1&first_share_uid=356429996&utm_medium=meipian_android&share_user_mpuuid=12400540af8039e68c18a827c7ebdfda&um_rtc=c0f7852fd0a6333cbce26ff531936a20&from=singlemessage&first_share_to=singlemessage#" target="_blank">胡骏捷同学</a></p> <p class="ql-block"><a href="https://www.meipian.cn/4nwqdoe5?mina_from=1" target="_blank">王陈晞同学</a></p> <p class="ql-block"><a href="https://www.jianpian.cn/a/a53avfi?sc=groupmessage&sd=1&a_uid=4151474&s_uid=4151474" target="_blank">洪瑜悦同学</a></p> <p class="ql-block"><a href="https://www.meipian.cn/4nw7cphw?mina_from=1" target="_blank">徐鑫淼同学</a></p> <p class="ql-block"><a href="https://www.meipian.cn/4ntrxn04?mina_from=1" target="_blank">徐子涵同学</a></p> <p class="ql-block"><a href="https://www.jianpian.cn/a/9y1f4lf?sc=groupmessage&s_uid=4101024&a_uid=4101024&sd=1" target="_blank">柯禹洋同学</a></p> <p class="ql-block"><a href="https://www.meipian.cn/4ntk8oup?first_share_to=group_singlemessage&share_depth=1&first_share_uid=187568713#" target="_blank">张向楠同学</a></p> <p class="ql-block"><a href="https://www.meipian.cn/4nthu5kb?first_share_to=group_singlemessage&share_depth=1&first_share_uid=187430001#" target="_blank">陈璟业同学</a></p> <p class="ql-block"><a href="https://www.meipian.cn/4ntfjaqr?first_share_to=group_singlemessage&share_depth=1&first_share_uid=50251095#" target="_blank">蒋梦瑶同学</a></p> <p class="ql-block"><a href="https://www.jianpian.cn/a/9x2fyup?sc=groupmessage&sd=1&a_uid=3890144&s_uid=3890144" target="_blank">汪玉锦同学</a></p> <p class="ql-block"><a href="https://www.meipian.cn/4ny00ne7?first_share_to=group_singlemessage&share_depth=1&first_share_uid=4962313#" target="_blank">吴睿宸同学</a></p>