GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed. For example, the carbon atom in coal becomes carbon dioxide when it is burned. The carbon atom changes from a solid structure to a gas but its mass does not change.
Detailed explanation-2: -The Law of Conservation of Mass holds true because naturally occurring elements are very stable at the conditions found on the surface of the Earth. Most elements come from fusion reactions found only in stars or supernovae.
Detailed explanation-3: -A given compound always contains exactly the same proportion of elements by weight can be explained by the Law of Constant Proportion. Hence this is an incorrect statement about the Law of Conservation of Mass.
Detailed explanation-4: -Law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction.
Detailed explanation-5: -Summary. The law of conservation of mass states that, during a chemical reaction, the total mass of the products must be equal to the total mass of the reactants.