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unit 5-section 1

vocab words

Molecular mass a number equal to the sum of the atomic masses of the atoms in a molecule
Formula weight sum of all the atomic masses of all the elements in a composition mass of the compound
Avagadro's number the number of atoms, molecules, ions, electrons, or protons in one mole
Mole the mass in grams of this amount of a substance, numerically equal to the molecular weight of the substance
Percent composition the percent of each element in a composition chemical makeup of the substance based on mass
Formula unit a quantity computed by multiplying the atomic weight of each element in a formula by the number of atoms of that element present in the formula, and then adding all of these products together
Molar volume the volume occupied by one mole of a substance in the form of a solid, liquid, or gas
Chemical formula a representation of a substance using symbols for its constituent elements
Equivalency the state of having equal valencies
STP standard temperature and pressure; used for measuring gas, density, and volume
Volume the quantity of three-dimensional space occupied by a liquid, solid, or gas
Mass the property which reflects the quantity of matter within a sample
Created by: 375princess