Signs of a chemical reaction

Front

What is a precipitate?

Back

A solid that forms when one liquid is poured into another.

Front

What is evidence of a chemical reaction?

Back

Anything that shows a new substance has formed.

Front

What is one sign of a chemical reaction?

Back

Bubbles are produced.

Front

Which of the following is NOT an indication of a chemical change?

Back

Shape change.

Front

Why are preservatives added to food?

Back

To prevent the oxidation of food and keep it from decaying.

Front

What happens during a chemical reaction?

Back

Reactants combine to form products.

Front

What is a common sign of a gas being produced in a reaction?

Back

Bubbles or fizzing.

Front

What does a temperature change indicate in a chemical reaction?

Back

It can indicate that a reaction is occurring.

Front

What is the role of energy in chemical reactions?

Back

Energy is either absorbed or released during a chemical reaction.

Front

What is a color change in a chemical reaction?

Back

A change in color that indicates a new substance may have formed.