Question

How do the products and reactants of a chemical change compare?

The mass of the products is greater than the mass of the reactants because energy is taken in by the reaction.

The mass of the products equals the mass of the reactants because the same matter is present.

The mass of the products equals the mass of the reactants because there is no energy involved in the reaction.

The mass of the products is less than the mass of the reactants because energy is given off by the reaction.

Answer 1

It should be the second. Total mass reactants is the same as total mass products. That is in an ideal reaction.

Answer 2

mass is neither created or destroyed only the state is changed so the second

Answer 3

Mass can not be created in a simple chemical reaction, besides in reality, most of the time the total mass of the product INTENDED by the reaction is not the same as the total mass of reactants because some other NON-desired products are created within the reaction.

Answer 4

Thanks :D

Answer 5

are you sure