Matter and Its Changes Quiz

What is a mixture with uniform composition throughout called?

• Solution

• Element

• Suspension

• Compound

Which of the following is an example of a chemical change?

• Yeast fermenting sugar

• Water boiling

• Ice melting

• Salt dissolving in water

According to the law of conservation of mass, what happens to mass during a chemical reaction?

• It decreases

• It is destroyed

• It increases

• It remains constant

What happens to liquid water when it boils?

• It turns into solid

• It turns into gas

• It remains liquid

• It evaporates into solid

Why does an egg become solid when cooked?

• It melts

• It evaporates

• It undergoes a physical change

• It undergoes a chemical change

How does temperature affect the volume of a gas?

• Volume decreases as temperature increases

• Volume decreases as temperature decreases

• Volume increases as temperature increases

• Volume remains constant

What is the best method to separate oil from water?

• Letting the oil float and skimming it off

• Pouring through a sieve

• Using a magnet

• Evaporating the water

Which process describes gas turning into a liquid?

• Freezing

• Melting

• Sublimation

• Condensation

What happens to the energy of water particles when they freeze?

• Energy remains constant

• Energy decreases

• Energy increases

• Energy is destroyed

Which method can be used to separate iron filings from glass shards?

• Letting them settle

• Using a magnet

• Evaporating the mixture

• Pouring through a sieve