Properties and changes of matter

Front

Which of the following is a sign that a chemical reaction has occurred?

Back

Formation of a gas.

Front

Flammability is a __ property.

Back

Chemical.

Front

What are the substances formed (at the end) in a chemical reaction called?

Back

Products.

Front

What are the initial substances in a chemical reaction called?

Back

Reactants.

Front

The reactants are on the left side of the chemical equation. True or False?

Back

True.

Front

What is a physical change?

Back

A change that does not alter the chemical composition of a substance.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in 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.