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 | Hey Jack! I heard that u were good in Chemistry. Can i ask your some questions? | |
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| Sure. What are the questions? | |
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| While walking around at 6.10 p.m |
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| Can you explain more about this sentence."In a chemical reaction, no atoms or elements are lost nor produced. They are simply rearranged into new combination to form new substance | |
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| Well, the law conservation of mass said, in chemical reactions the total mass of the reactants equals to the total mass of the products, so logically if the reactants and products have the same mass, no atoms or elements are lost or produced. | |
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| After a lot of chit-chat and now it's at 9.00 p.m |
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| Is it true that a chemical reaction which produce gas will decrease in mass if the reaction is conducted in an open container. | |
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| Yes. That is because the gas produced escape into the air. However, if the newsubstance increase in mass, that is because the chemical reaction involve combination of a substance with gases from air. | |
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