SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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atoms are not created or destroyed
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the total mass of the reactants is greater than the total mass of the products
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the total mass of the reactants is less than the total mass of the products
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matter is not changed
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Detailed explanation-1: -The Law of Conservation of Mass dates from Antoine Lavoisier’s 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.
Detailed explanation-2: -The same amount of matter exists before and after the change-none is created or destroyed. This concept is called the Law of Conservation of Mass.
Detailed explanation-3: -The law of conservation of mass states that in a closed chemical reaction system, the total mass of all reactants will be equal to the total mass of all products. This means that 10g of reactant A react with 5 grams of reactant B, product AB will have a mass of 15g. Thus, mass is conserved.
Detailed explanation-4: -Law of conservation of mass states that mass can neither be created nor be destroyed in a chemical reaction. The physical state of the substance or the properties of the chemical elements change in a chemical reaction, but no atoms are created or destroyed.