Front

What is the definition of 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 the definition of a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances, involving a rearrangement of atoms.

Front

Give an example of a physical change.

Back

An example of a physical change is water boiling.

Front

Give an example of a chemical change.

Back

An example of a chemical change is rusting of iron.

Front

What is the difference between physical properties and chemical properties?

Back

Physical properties can be observed without changing the substance's chemical identity, while chemical properties can only be observed during a chemical reaction.

Front

Is boiling point a physical or chemical property?

Back

Boiling point is a physical property.

Front

What happens to the particles in a substance during a physical change?

Back

During a physical change, the arrangement and movement of particles may change, but the particles themselves remain the same.

Front

What is freezing in terms of state changes?

Back

Freezing is the process of a liquid turning into a solid.

Front

What state of matter has particles that are closely packed together?

Back

The solid state of matter has particles that are closely packed together.

Front

What state of matter has particles that are far apart and fill the available space?

Back

The gas state of matter has particles that are far apart and fill the available space.