以这个作为内容写出过程 还有 实验现象 Put a piece of chalk in water for 24 hours.What happens?why 不需要太多的字数 70-100就成

以这个作为内容写出过程 还有 实验现象
Put a piece of chalk in water for 24 hours.What happens?why
不需要太多的字数 70-100就成

关于这个问题本人来回答,你的标题用英语看来你懂的一些.那本人就用英语解释给你听吧!Invests the chalk in the water 24 hours.What has?Invests the chalk in the water after 24 hours,the volunteer fire brigade dissolves that chalk,in dissolution before can partly have the air bubble,probably uses to do the lime block to place in the water the same truth.Afterwards the volunteer fire brigade changes the pollution,you put any color the chalk it to turn any type the color.

把一块粉笔放在水里，24小时之后会发生什么，原因是什么？
这样的问题让谁去找个粉笔给你做实验呢？倒不如你把粉笔放到水里，看到发生的事情后来这里描述一下，或许可以翻译给你。

达 24 小时把一个粉笔放入水。 发生什么事? 为什么 ?

-----------------------Phenomena---------------------------
Although The chalk becomes softer,it should still be mostly in one solid piece.The color of the Chalk becomes dark.
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-----------------------Phenomena---------------------------
Although The chalk becomes softer,it should still be mostly in one solid piece.The color of the Chalk becomes dark.
-----------------------THEORY------------------------------
Chalk is made from calcium carbonate (CaCO3)/calcite.The calcium carbonate is very little soluble in water.
Gypsum plaster
Plaster of Paris, or simply plaster, is based on calcium sulfate hemihydrate, nominally (CaSO4)2. H2O. It is created by heating gypsum to about 150°C, 2(CaSO4 · 2H2O) → (CaSO4)2 · H2O + 3 H2O (released as steam). A large gypsum deposit at Montmartre in Paris is the source of the name[1]. When the dry plaster powder is mixed with water, it re-forms into gypsum, initially as a paste but eventually drying into a solid. The structure is made up of sheets of Ca2+ and SO42- ions held together by hydrogen bonds in the water molecules. The grip between these sheets is easily broken, so plaster is fairly soft.
Like those materials plaster starts as a dry powder that is mixed with water to form a paste, which then dries into a hard surface. Unlike those materials plaster remains quite soft after drying.

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投入粉笔在水中24个小时。 什么发生？ 为什么？
Put a piece of chalk in water for 24 hours. What happens? why ?
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