Chemical Interactions Investigation 9

Front

What is an example of a chemical reaction involving a change in color?

Back

The surface of a penny changing color after many years is an example of a chemical reaction.

Front

What principle states that matter cannot be created or destroyed?

Back

Conservation of matter.

Front

What are atoms that have a strong bond called?

Back

Molecules.

Front

Is melted butter becoming solid when placed in the refrigerator a chemical reaction?

Back

No, it is a physical change.

Front

What type of substance is made of matter: Natural, Synthetic, or Both?

Back

Both.

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 is an example of a physical change?

Back

Melting ice.

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, the mass of the products equals the mass of the reactants.

Front

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.