BIOL 1005 Lecture Notes - Lecture 21: Relative Atomic Mass, Capillary Action, Vaporization
Document Summary
General biology 1005 basic chemistry: general chemistry terminology. Read along with your text, and check out the diagrams in chapter 2. Elements= substances which cannot be decomposed into more simple subtances by chemical means. The smallest unit of elements which retain all the properties of the element. Central core of the atom which contains most of the mass of the atom and is positively charged. Contains protons (positively charged mass units) and neutrons which contain mass, but no charge. Atomic weight is the addition of the weight of the protons and neutrons (each with one unit of mass) and the electrons. A single unit of negative charge with virtually no mass. Electrons circle the nucleus in distinct levels, called orbitals. Different molecular weights of the same element due to differing numbers of neutrons in the nucleus. Isotopes have the same chemical properties as the element. Electron orbitals= theoretical probability of electron location at distinct energy levels around the nucleus.
