Science 6 Chapter 4 Test Set 1

Match it! Select the correct answer from the pull down...Good luck!

The principle of conservation of mass is true

The only sure evidence of a chemical reaction is

A bottle of hydrogen peroxide that eventually turns into a bottle of water and oxygen gas is an example of

CaCO₃ represents a chemical

Chemicals that react as biological catalysts by speeding up reactions in living things are called

Which is the correct chemical equation for: Sodium reacts with oxygen to create sodium oxide.

In chemical reactions, what does the principle of conservation of mass mean?

A material used to decrease the rate of a chemical reaction is called a(n)