The Composition, Structure, and Properties of Substances

Front

What is the melting point?

Back

The temperature at which a solid becomes a liquid.

Front

How many atoms of oxygen are in carbon dioxide (CO₂)?

Back

2

Front

What is the atomic composition of methane?

Back

CH₄

Front

What does 'appearance' refer to in the context of substance properties?

Back

The way a substance looks, including its color, shape, size, and texture.

Front

What are butane and isobutane examples of?

Back

Molecules with the same atomic composition but different chemical structures.

Front

What is the definition of a substance?

Back

A form of matter that has a specific composition and distinct properties.

Front

What is the boiling point?

Back

The temperature at which a liquid turns into a gas.

Front

What is density?

Back

The mass of a substance divided by its volume.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

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

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.