Physical and Chemical Changes

Front

What is a physical change?

Back

A physical change is a change in an item's properties like its shape, size, or density.

Front

What happens to salt when it dissolves in water?

Back

The process of salt dissolving in water is a physical change.

Front

Is rusting a bicycle a chemical or physical change?

Back

Rusting a bicycle is a chemical change.

Front

Is glass breaking a chemical or physical change?

Back

Glass breaking is a physical change.

Front

What occurs when mixing milk and vinegar that results in a white, chunky substance?

Back

This is a chemical change known as a precipitate.

Front

What are the main differences between physical and chemical changes?

Back

Physical changes affect the form of a substance, while chemical changes alter the substance's chemical composition.

Front

Can physical changes be reversed?

Back

Many physical changes can be reversed, such as freezing and melting.

Front

Can chemical changes be reversed?

Back

Chemical changes typically cannot be reversed by simple physical means.

Front

What is an example of a physical change?

Back

Examples include melting ice, breaking glass, or dissolving sugar in water.

Front

What is an example of a chemical change?

Back

Examples include rusting iron, burning wood, or cooking an egg.