Review for Semester Test Part b2 for Tianna

Front

What is formed when two liquids are mixed and a solid appears?

Back

New substances are being formed.

Front

How do you calculate average speed?

Back

Average speed = Total distance / Total time.

Front

What is the average speed of an object that travels 40 meters in 2 seconds?

Back

20 m/s.

Front

What is the effect of stirring on the rate of dissolution of a solid in a liquid?

Back

It increases the rate.

Front

What is the term for the substance that dissolves in a solvent?

Back

Solute.

Front

What is the term for the substance that does the dissolving in a solution?

Back

Solvent.

Front

What is a solution?

Back

A homogeneous mixture of two or more substances.

Front

What is a chemical change?

Back

A process where new substances are formed.

Front

What is a physical change?

Back

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

Front

What is a molecule?

Back

A group of atoms bonded together.