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Atomic Chemistry
Clep Science
Question | Answer |
---|---|
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 |