Unit 2 Science Test

Front

What happens to a steel shovel when it is left in damp soil?

Back

The shovel rusted in the damp soil.

Front

What is the true statement about the weight of a candle before and after it burns?

Back

The weight of the matter is the same before and after it is burned.

Front

What is evidence that a chemical change took place in a half-eaten apple?

Back

The apple changed color.

Front

Does mixing cereal with milk create a new substance?

Back

No, because he can separate the cereal from the milk to get the original substances back.

Front

What is an example of solubility?

Back

Pour a spoonful of salt into a glass of water.

Front

What is rusting?

Back

Rusting is a chemical change that occurs when iron reacts with oxygen and moisture, forming iron oxide.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

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

Front

What is solubility?

Back

Solubility is the ability of a substance to dissolve in a solvent, such as salt in water.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.