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KMHS_Chemistry

Chapter 6 Vocabulary: Chemical Quantities

QuestionAnswer
Avogradro's Number the number of representative particles contained in one mole of a substance. 6.02x10^23
Empirical formula The lowest whole number ratio of atoms in a compound
molar mass an expression sometimes used in place of gram formula mass to refer to the mass of a mole of any element or compound.
mole the amount of a substance that contains 6.02x10^23 representative particles of that substance.
percent composition the percent by mass of each element in a compound
representative particle the smallest unit into which a substance can be broken down without a change in composition.
standard temperature & pressure (STP)the conditions under which the volume of a gas is usually messured.
Created by: KellyBeck
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