Chemical and Physical Changes

Front

What is a Chemical Change?

Back

A change in which new matter is formed and cannot be reversed.

Front

What is a Physical Change?

Back

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

Front

What is a Catalyst?

Back

Something that starts a chemical change without being consumed in the process.

Front

What is a Reactant?

Back

A substance that undergoes a chemical change in a reaction.

Front

What is the Freezing Point of water?

Back

The temperature at which liquid water freezes, 32 degrees Fahrenheit.

Front

What is the Boiling Point of water?

Back

The temperature at which liquid water boils, 212 degrees Fahrenheit.

Front

What is a Solid?

Back

A state of matter with a definite shape and volume.

Front

What is a Liquid?

Back

A state of matter that has a definite volume but takes the shape of its container.

Front

What is a Gas?

Back

A state of matter where attractive forces are too weak to keep molecules close together, allowing them to move freely.

Front

What is Plasma?

Back

A state of matter where gas is energized until atomic electrons are no longer associated with the nucleus.