In class today I learned how the stomach uses acid to digest the food. In separate test tubes we put water, meat tenderizer and hydrochloric acid. In one tube nothing happened. There was only meat tenderizer and water. The egg whites inside did decompose. Another tube had water and another had acid. They both made the whites decompose a little bit. The last tube had both meat tenderizer and hydrochloric acid. It made the egg whites disintegrate. This happened because of the enzymes in the tenderizer.