Chemical Reactions

Front

What happens to atoms in a chemical reaction?

Back

They rearrange.

Front

What occurs when a chemical change happens?

Back

A chemical reaction has occurred.

Front

What happens to atoms when they burn?

Back

They all rearrange to form new substances.

Front

Can atoms be destroyed in a chemical reaction?

Back

False.

Front

What is an example of an endothermic reaction?

Back

Cold pack.

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 law of conservation of mass?

Back

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

Front

What is an exothermic reaction?

Back

A reaction that releases energy, usually in the form of heat.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings.

Front

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.