Unit Two Review

Front

In a chemical reaction, what must the mass of the products equal?

Back

The mass of the reactants.

Front

What is the only way to break down a compound into its individual components?

Back

Through a chemical reaction.

Front

What is the purpose of an instrument that measures length?

Back

To measure the distance between two points.

Front

What is a compound?

Back

A substance formed when two or more chemical elements are chemically bonded together.

Front

What does an instrument that finds the volume of a substance do?

Back

It measures the amount of space that a substance occupies.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is the difference between a mixture and a compound?

Back

A mixture is a combination of substances that are not chemically bonded, while a compound is formed by the chemical bonding of elements.

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.

Front

What is the role of a thermometer?

Back

To measure temperature.

Front

What is the definition of a reactant?

Back

A substance that undergoes change during a chemical reaction.