Unit 3: Chemical Reactions and Equations Final Assessment Review

Front

What is a product in a chemical reaction?

Back

The substances that are formed by a chemical reaction.

Front

What type of change occurs when bacteria in milk causes it to curdle?

Back

Chemical change.

Front

What does it mean if carbon dioxide can be poured out of a bottle and sinks in the air?

Back

It is more dense than air.

Front

How can you determine if a chemical equation is balanced?

Back

By checking if the number of atoms of each element is the same on both sides of the equation.

Front

What is a mixture?

Back

A combination made of two or more different substances.

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, mass is neither created nor destroyed.

Front

What is a reactant?

Back

The substances you start with in a chemical reaction.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not alter the chemical composition, while a chemical change does.

Front

What is an example of a physical change?

Back

Melting ice.