Question

Rewrite the following sentence correctly

1. Oxidation is the gain of electrons from a substance.

2. Rusting is a double decomposition reaction.

3. Action of heat on calcium carbonate is an example of decomposition

reaction.

4. The number of atoms of each element is conserved in any chemical

reaction.

5. Chemical changes are generally accompanied by an exchange of energy.​

Answer 1

Answer:

oxidation is the loss of electrons from a substance

rusting is a combination reaction

the number of atoms of each element is conserved in reactants

chemical changes are generally accompanied by gaining or looking of energy