Method A. Hypothesis 1. Devise experiments to test 2. Data needs to be collected to prove the hypothesis B. Facts 1. Well tested, many observations have been made 2. Must be verified by others.
Natural processes go towards higher disorder.
Entropy is a measure of disorder in the universe. The entropy of the universe is increasing. Energy is needed to combat entropy. Matter is neither created nor destroyed during a chemical change. The mass of starting materials equals the mass of products.