Sem 2 Vocab Review

Front

What term represents the actual number of atoms of each element in a molecule? For example, the molecular formula of water is H2O, indicating two hydrogen atoms and one oxygen atom per molecule.

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Molecular Formula

Front

What is the simplest whole-number ratio of atoms of each element in a compound called? For instance, the empirical formula of hydrogen peroxide (H2O2) is HO, showing the lowest ratio of hydrogen and oxygen atoms.

Back

Empirical Formula

Front

What is a ratio or fraction that expresses the equivalence between different units and is used for converting one unit to another?

Back

Conversion Factor

Front

What is the term for the sum of the atomic masses of sodium and chlorine in sodium chloride (NaCl), measured in atomic mass units (amu)?

Back

Formula Mass

Front

What is the mass of one mole of a substance, measured in grams per mole (g/mol), and is numerically equal to the formula mass but expressed in grams?

Back

Molar Mass

Front

Back

Avogadro’s Number

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Back

Mole

Front

What term indicates the percentage by mass of each element in a compound, calculated by dividing the mass of each element by the total mass of the compound and multiplying by 100?

Back

Percent Composition

Front

What is a substance that takes part in and undergoes change during a chemical reaction, typically present at the beginning of the reaction?

Back

Reactant

Front

Substances formed as a result of a chemical reaction, present at the end of the reaction and showcasing the transformation of reactants into new substances.

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Product