What is the law of conservation of mass?
It states that no atoms are lost or made during a chemical reaction so the mass of the products equals the mass of the reactants.
If the total mass of all the reactants involved in a chemical reaction was 60 grams (g), what will be the total mass of all the products?
60 grams (g) because:
mass of products = mass of reactants
A chemical equation is balanced in terms of what?
The number of atoms of each element involved on both sides of the equation.
Write a balanced equation of magnesium reacting with hydrochloric acid.
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)