GR 5 Unit 3 L3 - How Can Substances Be Identified?

Front

What is a property of a substance?

Back

A characteristic that helps to identify the substance, such as color, hardness, or solubility.

Front

What does solubility mean?

Back

The ability of a substance to dissolve in another substance.

Front

What factors affect solubility?

Back

The substance being dissolved and the substance it is dissolved in.

Front

What happens when a substance burns?

Back

It undergoes a chemical change.

Front

What does it mean if a substance is conductive?

Back

It allows electricity or heat to pass through it.

Front

Why is plastic used to cover power cords?

Back

Because plastic has a low electrical conductivity, making it safe.

Front

How can you test for the hardness of a material?

Back

By scratching it with a diamond.

Front

What is a chemical change?

Back

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

Front

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

Back

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

Front

What is an example of a physical change?

Back

Melting ice into water.