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17．化学兴趣小组三位同学对蜡烛及其燃烧进行了如下探究 �贝贝取一支蜡烛用小刀切下一小块把它放入水中蜡烛浮在水面上这说明石蜡难溶于水 Template






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sketch 5437 Mikasa from Attack on Titan by Manimarmuthu Muthu
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sketch 2723 by Sam Torres
sketch 4091 Irie
sketch 5133 Jiraiya by Saiful Farizam
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sketch 2593 Tweety by sketchmaster
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tomski17．化学兴趣小组三位同学对蜡烛及其燃烧进行了如下探究 �贝贝取一支蜡烛用小刀切下一小块把它放入水中蜡烛浮在水面上这说明石蜡难溶于水 coloring
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化学兴趣小组的小明小刚小军等三位同学对蜡烛燃烧进行了如下探究探究一蜡烛火焰哪一部分温度最高．小明同学点燃一支蜡烛仔细观察蜡烛火焰的 sketch template
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化学兴趣小组的同学对蜡烛的燃烧进行了如下探究．1丽丽点燃蜡烛观察到火焰分为外焰内焰焰心三层．如图把一根火柴梗放在火焰中约1s后 sketch template
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化学兴趣小组的三位同学对蜡烛及其燃烧进行了如下探究．1贝贝取一支蜡烛用小刀切下一小块把它放入水中看到的现象是 通过该现象说明石蜡的 sketch template
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化学学习的特点是要关注物质的性质性质变化变化和变化过程变化过程及其现象现象等．——青夏教育精英家教—— sketch template
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化学兴趣小组的小明小刚小军等三位同学对蜡烛燃烧进行了如下探究探究一蜡烛火焰哪一部分温度最高．小明同学点燃一支蜡烛仔细观察蜡烛火焰的 sketch template
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几位同学对蜡烛燃烧火焰的焰心进行了以下探究．请你完成其中的一些步骤1点燃蜡烛将小木条迅速平放入火焰中约1s后取出现象这证明焰心 sketch template
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21．化学兴趣小组的同学设计了一个对比实验探究燃烧现象点燃三支蜡烛在其中一支蜡烛上扣一只烧杯A将另两支蜡烛放在烧杯中然后烧杯C中加 sketch template
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17．化学兴趣小组三位同学对蜡烛及其燃烧进行了如下探究 贝贝取一支蜡烛用小刀切下一小块把它放入水中蜡烛浮在水面上这说明石蜡难溶于水 sketch template
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某同学对蜡烛的燃烧进行探究 点燃一支蜡烛用一只烧杯倒扣在燃着的蜡烛上蜡烛燃烧片刻后熄灭如实验一 再点燃蜡烛然后吹灭看到烛芯 sketch template
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兴趣小组对蜡烛燃烧实验进行了如下深入探究，请跟随小组一起来完成吧。 sketch template
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几位同学对蜡烛燃烧火焰的焰心进行了以下探究．请你完成其中的 些步骤1点燃蜡烛将一根小木条迅速平放入火焰中约1s后取出现象如右图A sketch template
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下面所示是某校化学兴趣小组的同学探究物质燃烧条件的实验过程 实验1在酒精灯上点燃木条和玻璃棒 实验2分别点燃两支小蜡烛将其中一支蜡烛 sketch template
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学探究是学研究的重要形式是获取化学知识的重要途径．小新在探究蜡烛燃烧的过程中现罩在火焰上方的烧杯内壁被熏你认为下列做法中不可取的 sketch template
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已知硫酸铵的化学式为 NH4 2SO41NH4 2SO4的相对分子质量为 2氮元素和氧元素的质量比 3氮元素的质量分数 sketch template
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某同学对蜡烛及其燃烧进行如下探究请你填写下列空格 1蜡烛是由 和 组成的蜡烛的颜色是 形状 硬度较 气是 蜡烛不溶于水 sketch template
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化学兴趣小组的三位同学对蜡烛及其燃烧进行了如下探究．1贝贝取一支蜡烛用小刀切下一小块把它放入水中蜡烛浮在水面上．结论石蜡的密度比水 sketch template
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如图所示化学危险品标志指的是 A．腐蚀品B．自燃物品C．爆炸品D．有毒品 题目和参考答案——青夏教育精英家教—— sketch template
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化学兴趣小组的同学对蜡烛及其燃烧进行了如下探究．1他们取一支蜡烛用小刀切下一小块把它放入水中蜡烛浮在水面上．结论石蜡的密度比水小 sketch template
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化学兴趣小组的三位同学对蜡烛及其燃烧进行了如下探究．1贝贝取一支蜡烛用小刀切下一小块把它放入水中蜡烛浮在水面上．结论石蜡的密度比水 sketch template
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某同学对蜡烛及其燃烧进行了如下探究．请填写下列空格1取一支蜡烛用小刀切下一小块把它放入水中蜡烛浮在水面上结论蜡烛的密度小蜡烛的 sketch template
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某同学对蜡烛及其燃烧进行了如下探究．请填写下列空格1取一支蜡烛用小刀切下一小块把它放入水中蜡烛浮在水面上．结论石蜡的物理性质 sketch template
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某同学对蜡烛及其燃烧进行了如下探究．请填写下列空格1取一枝蜡烛用小刀切下一小块把它放入水中蜡烛浮在水面上．结论石蜡的密度比水 sketch template
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化学兴趣小组的同学对蜡烛的燃烧进行了如下探究．1丽丽点燃蜡烛观察到火焰分为外焰内焰焰心三层．如图把一根火柴梗放在火焰中约1s后 sketch template
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用化学用语填空1 2个汞原子 23个铁离子 3 4个氨分子 4加碘盐KIO3中I元素的化合价 5核电荷数分别为8 sketch template
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一次化学兴趣小组活动时小红在实验室制取了一种初中化学中常见的气体收集在三个集气瓶中让小刚通过实验确定该气体．小刚进行了下面的实验．请根据 sketch template
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某化学课外兴趣小组成甲乙丙三位同学在学习了木炭还原氧化铜的实验后提出如下问题“木炭与一氧化铅反应生成铅的同时产生的气体一定全部为 sketch template
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某化学兴趣小组三位同学在学习盐酸与氢氧化钠反应后结合自己在实验室中所做的实验分别从不同方面对其进行图画描述图A是实际操作图图B是反应 sketch template
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题目某化学兴趣小组三位同学在学习了稀盐酸与氢氧化钠反应后结合自己所做的实验分别从不同方面对其进行图象描述．A是实际操作图B是反应过程 sketch template
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某化学兴趣小组在按图1装置做属钠在空气中燃烧的实验时观察到产物不仅仅有淡黄色的固体生成还有量的色颗粒产生该小组对色颗粒进行了如下 sketch template
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某校化学兴趣小组的同学探究可燃物质燃烧的条件探究如下1取一支大试管往里加2mL305%过氧化氢溶液2用镊子取一块白磷投入到 sketch template
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某化学兴趣小组三位同学在学习盐酸与氢氧化钠反应后分别结合自己在实验室中所做的实验各从不同方面对其进行图象描述．图A是实际操作图图B是反应 sketch template
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某化学兴趣小组三位同学在学习盐酸与氢氧化钠反应后分别结合自己在实验室中所做的实验各从不同方面对其进行图象描述图A是实际操作图图B是反应 sketch template
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28．某兴趣小组活动中同学们按图1装置对“可燃物燃烧的条件 进行探究探究过程中大家对磷燃烧生成的大量白烟是否危害人体健康提出问 sketch template
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27．学校化学兴趣小组的同学对一瓶溶液进行分析初步确定它是含有同种阴离子的MN的混合溶液继续分析的步骤如下 请根据上述实验过程及现象 sketch template
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某农中学的化学兴趣小组在开展实验活动时用山泉水配制氢氧化钠溶液结果配制几次所得的溶液都出现浊的现象放置一段时间后容器底部还出现白色 sketch template