1 Chapter 31 Nuclear Physics and Radioactivity. 2 1. Nuclear Structure a)Proton - positive charge - mass 1.673 x 10 -27 kg ≈ 1 u b) Neutron - discovered.
Essential Chemistry for Biology Chapter 2. Why Chemistry?? Chemicals make up everything! Body Environment Food.
Essential Chemistry for Biology Chapter 2. Tracing Life Down to the Chemical Level.
