CHEMICAL REACTIONS

A chemical reaction happens when one hundred elements combine to make new chemical compounds.

• TRUE

• FALSE

Many chemical reactions release water as heat.

• TRUE

• FALSE

Natural gas is an example of a chemical reaction.

• TRUE

• FALSE

Some chemical reactions need to have ____ put in to make them happen.

• oxigen

• atoms

• heat

Rust is an example of a chemical reaction.

• TRUE

• FALSE

Baking bread is not an example of a chemical reaction.

• TRUE

• FALSE

Heat causes a reaction between the ____ when you bake a cake.

• air

• water

• ingredients

Some chemical reactions take heat away to happen.

• TRUE

• FALSE