When magnesium hydroxide reacts with nitric acid, it produces magnesium nitrate and water.

Mg(OH)2 + 2HNO3 -> Mg(NO3)2 + 2H20
In one to two sentences, explain how this reaction demonstrates that matter is neither created nor destroyed in a chemical reaction.

This reaction demonstrates the conservation of matter as the number of atoms on both sides of the equation (reactants and products) remains the same, indicating that no atoms are created or destroyed during the reaction.