Evidence of Chemical Reactions

Front

What happens to atoms during a chemical reaction?

Back

They rearrange to form new products.

Front

What is the Law of Conservation of Mass?

Back

Mass is never created or destroyed.

Front

What is evidence of a chemical reaction?

Back

Anything that shows a new substance has formed.

Front

What do we call everything to the right of the arrow in a chemical equation?

Back

Products.

Front

In the equation 2Mg + O2 ---> 2MgO, what are the reactants?

Back

Mg and O.

Front

What is a chemical reaction?

Back

A process where substances (reactants) are transformed into new substances (products).

Front

What is a reactant?

Back

A substance that undergoes change in a chemical reaction.

Front

What is a product?

Back

A substance that is formed as a result of a chemical reaction.

Front

What is an example of a physical change?

Back

Melting ice.

Front

What is an example of a chemical change?

Back

Burning wood.