Midterm Review 2024

Front

What is a chemical property of a substance?

Back

A characteristic of a substance that can only be observed during a chemical reaction, such as flammability.

Front

True or False: All substances have the exact same freezing point.

Back

False. Different substances have different freezing points.

Front

What happens to particles in a substance when it is heated?

Back

Particles move further apart, causing the substance to expand.

Front

What is a reactant in a chemical equation?

Back

A substance that is present before a chemical reaction occurs, written to the left of the arrow.

Front

What is the charge of an electron?

Back

Negative.

Front

Define flammability.

Back

Flammability is the ability of a substance to catch fire and burn.

Front

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

Back

A physical property can be observed without changing the substance's identity, while a chemical property can only be observed during a chemical change.

Front

What is a product in a chemical equation?

Back

A substance that is formed as a result of a chemical reaction, written to the right of the arrow.

Front

What is the boiling point of a substance?

Back

The temperature at which a substance changes from a liquid to a gas.

Front

What is density?

Back

Density is the mass of a substance divided by its volume, often expressed in g/cm³.