Chemistry Pearson Ch. 10 Test A.

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Last updated 2:48 PM on 4/22/24
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10 Terms

1
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Standard Temperature and Pressure

Conditions of 0°C and 101.3 kPa, used as a reference point in chemistry.

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Molar Volume

The volume occupied by a mole of any gas at STP, which is 22.4 L.

3
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Representative Particle

An atom, a formula unit, or a molecule, representing the smallest unit in a substance.

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Molar Mass

The mass of a mole of a substance, expressed in grams per mole.

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Atomic Mass

The mass in atomic mass units (amu) of an atom of an element.

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Avogadro’s Number

6.02 × 10^23, representing the number of representative particles in a mole of a substance.

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Mole (mol)

A unit representing 6.02 × 10^23 representative particles of a substance.

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Empirical Formula

The formula that gives the lowest whole-number ratio of elements in a compound.

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Percent Composition

The percent by mass of each element in a compound.

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Avogadro’s Hypothesis

States that equal volumes of gases at the same temperature and pressure contain equal numbers of particles.