Unit 2 Review

Front

What is a solvent in a solution?

Back

A solvent is the substance that does the dissolving in a solution.

Front

What happens to the rate of dissolution when the temperature of the solvent is increased?

Back

The rate of dissolution increases when the temperature of the solvent is increased.

Front

How does temperature affect the rate of dissolution for solids?

Back

Higher temperatures increase the rate of dissolution for solids.

Front

How can you distinguish between a physical and a chemical change?

Back

You can distinguish them by determining if a new substance is formed.

Front

How does increasing the surface area of a solid solute affect its dissolution in a solvent?

Back

Increasing the surface area of a solid solute increases the rate of dissolution.

Front

What is a solution?

Back

A solution is a homogeneous mixture of two or more substances.

Front

What is the difference between a solute and a solvent?

Back

A solute is the substance that is dissolved, while a solvent is the substance that does the dissolving.

Front

What is saturation in a solution?

Back

Saturation occurs when no more solute can dissolve in the solvent at a given temperature.

Front

What is the effect of stirring on the rate of dissolution?

Back

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

Front

What is a physical change?

Back

A physical change is a change that does not alter the chemical composition of a substance.