Solutions and Concentration

Front

What are electrolytes?

Back

Substances that dissociate into ions in solution and can conduct electricity.

Front

What is a solute?

Back

The substance that is dissolved into the solution.

Front

What is a solvent?

Back

The substance that does the dissolving in a solution.

Front

What is solubility?

Back

The ability of a substance to dissolve in a solvent at a given temperature and pressure.

Front

How does stirring affect solubility?

Back

Stirring increases the rate of solubility by distributing solute particles throughout the solvent.

Front

What is molarity?

Back

A measure of concentration defined as the number of moles of solute per liter of solution.

Front

How do you calculate moles from molarity?

Back

Moles = Molarity (M) x Volume (L).

Front

What is percent by mass?

Back

A way to express concentration, calculated as (mass of solute / total mass of solution) x 100%.

Front

What happens to solubility when temperature increases?

Back

For most solids, solubility increases with temperature.

Front

What is an example of a nonelectrolyte?

Back

Sugar (sucrose) is an example of a nonelectrolyte, as it does not dissociate into ions.