Chapter 3 - Molecules, Moles, and Chemical Equations

This set of flashcards covers key vocabulary and concepts from Chapter 3 dealing with molecules, moles, and chemical equations.

Conservation of Mass

In a chemical reaction, matter is neither created nor destroyed, but rearranged.

Mole

A unit measuring 6.022 x 10^23 particles, commonly used to count atoms and molecules.

Avogadro's Number

The number of particles in one mole, approximately 6.022 x 10^23.

Stoichiometry

The quantitative relationship between reactants and products in a chemical reaction.

Molar Mass

The mass of one mole of a substance, measured in grams per mole, numerically equal to its atomic mass in amu.

Electrolyte

A substance that dissolves in water to produce a solution that conducts electricity.

Nonelectrolyte

A substance that dissolves in water but does not produce ions and therefore does not conduct electricity.

Strong Acid

An acid that completely ionizes in solution.

Weak Acid

An acid that only partially ionizes in solution.

Molarity (M)

The concentration of a solution expressed as the number of moles of solute divided by the volume of solution in liters.