Chemical Reactions

Front

What is a molecule?

Back

A molecule is made of more than one atom bonded together.

Front

What is an example of a physical change?

Back

Freezing water is an example of a physical change.

Front

What type of change occurs when TNT explodes?

Back

The explosion of TNT is a chemical change.

Front

Who studies chemical reactions to form new materials?

Back

A materials scientist studies chemical reactions to create new materials.

Front

What is a catalyst?

Back

A catalyst is a substance that helps a chemical reaction happen faster.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What happens during a chemical reaction?

Back

During a chemical reaction, reactants are transformed into products through the breaking and forming of chemical bonds.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change.

Front

What is the role of a chemical engineer?

Back

A chemical engineer designs processes to produce, transform, and use chemicals.

Front

What is rusting an example of?

Back

Rusting is an example of a chemical change.