BIO 101 Chapter Notes - Chapter 2: Electron Shell, Hydrogen Bond, Chemical Bond
Document Summary
Bio 101: fundamental building blocks: chemistry, water, and ph. Everything that exists falls into one of two categories: matter or energy. Matter and its transformations is the subject of chemistry. Matter: anything that takes up space and has mass. Mass: a measure of the quantity of matter in any given object. How much space does an object occupy? (volume) In biology think of mass as equivalent to weight. Plato said all matter is made up of 4 primary substances: earth, air, fire, and water (i remember this part as the avatar haha) Democritus believed that those substances were made of smaller units that were invisible and indivisible atoms. Matter is composed of atoms that are invisible to the human eye but can be divided. The 3 parts of an atom are protons, neutrons, and electrons. These 3 parts exist in a special assignment that is always the same.
