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Atomic Chemistry

Clep Science

Chemistry The study of matter
atoms the substance of what all matter is made of
element a substance that can not be broken down into any other substance
atomic number the number of protons found in the nucleus of an atom of the element a
atomic mass is calculated by positive ups of the masses of the protons and neutrons
isotopes atoms with the same number of protons but different number of neutrons
atomic weight the average mass number
molar mass the number of the element of the mass in grams of one mole of atoms
electron cloud it is where electrons travel freely in a 3-dimensional space
quantum mechanics predicts the probabilities of an electron being in a certain area at a certain time
energy level a particular amount of energy related to it
valence shell the outermost occupied energy level of an element
Created by: chavafor4