Review Chemistry Unit 4

Front

What is a Chemical Change?

Back

A chemical change occurs when two or more molecules interact, forming new molecules.

Front

What is the Atomic Mass of Boron?

Back

The atomic mass of Boron is 11.

Front

What is a Physical Change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is an example of a Physical Change?

Back

Cutting paper, melting glass, and boiling water are examples of physical changes.

Front

What is NOT an example of a Physical Change?

Back

Burning wood is NOT an example of a physical change; it is a chemical change.

Front

What is a Reactant?

Back

A reactant is a substance that undergoes a chemical change in a reaction.

Front

What is a Product?

Back

A product is a substance that is produced as a result of a chemical reaction.

Front

What is an Element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a Compound?

Back

A compound is a substance formed when two or more elements chemically bond together.

Front

What is the difference between an Element and a Compound?

Back

An element is a single type of atom, while a compound consists of two or more different types of atoms bonded together.