Question

define law of conservation of mass with equation

Answer 1

Atoms are the smallest particles of an element that can take part in a chemical reaction. During any chemical reaction no particles are created or destroyed: the atoms are simply rearranged from the reactants to the products. mass is never lost or gained in chemical reactions.

Answer 2

The law of conservation of mass states that... Mass can neither be created nor be destroyed... It was proved by doing a chemical reaction and it was observed that the total mass of reactants is equal to the mass of product.... But the equation must be balanced...

It can be expressed as...

2H2+O2---->2H2O... Here we can simply see that mass on reactant side is equal to mass on the product side...

Hope it helps...