List 2 examples of chemical changes not already mentioned or shown in this form. * 2 points

Answer 1

Sure! Here are two examples of chemical changes:

1. Rusting of Iron: When iron reacts with oxygen and moisture in the air, it forms iron oxide (rust). This is a chemical change because the original substances (iron and oxygen) are transformed into a new compound.

2. Digestion of Food: When food is consumed, it undergoes a series of chemical reactions in the body, breaking down complex molecules into simpler ones (such as proteins into amino acids). This process changes the chemical structure of the food, representing a chemical change.