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chemistry vocab ch. 10
the amount of a substance that contains 6.02 X 10 ^23 representattive particles of that substance
the number of representative particles contained in one mole of a substance
the smallest unit into which a substance can be broken down without a change in compostition, usually atoms, moleules or atoms
a term used to refer to the mass of a mole of any substance
equal volumes of gases at the same temperature and pressure contain equal numbers of particles
standard temperature and pressure
the conditions under which the volume of a gas is usually measured
the volume occupied by 1 mole of a gas at standard temperature and pressure
the percent by mass of each element in a copund
a formula with the lowest whole -number ratio of elements ina compound