Chemical Reactions review spring 2024

Front

What is a common sign that a chemical change has occurred?

Back

A chemical has turned a different color, bubbled, and/or changed temperature.

Front

How does a chemical change differ from a physical change?

Back

In a chemical change, a new substance is formed, while in a physical change, no new substance is formed.

Front

What does it mean for a chemical equation to be balanced?

Back

There must be an equal amount of atoms on both sides of the equation.

Front

What is an example of a chemical change?

Back

Digesting your food.

Front

What is a physical change?

Back

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

Front

What happens to the atoms in a chemical reaction?

Back

Atoms are rearranged to form new substances.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

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.