SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the reactants and products contain the same types of atoms
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the reactants and products have different properties
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the reactants and products are the same substances
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the reactants and products are different substances
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Detailed explanation-1: -Detailed Solution. The correct answer is Option(3). i.e.The rate of reaction doesn’t depend on the concentration of reactants, because they have fixed no of atoms in each molecule. It is a reaction with a combustible material with an oxidizer to give an oxidized product.
Detailed explanation-2: -The reactants and products in a chemical reaction contain the same atoms, but they are rearranged during the reaction. As a result, the atoms end up in different combinations in the products. This makes the products new substances that are chemically different from the reactants.
Detailed explanation-3: -In a chemical reaction, only the atoms present in the reactants can end up in the products. No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
Detailed explanation-4: -Melting of candle wax on heating is an example of physical change no chemical reaction is taking place only the change of state from solid to liquid state.