A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

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

Blending fruits together is an example of a physical change.

When gallium melts, it changes from solid to liquid but remains gallium, demonstrating a physical change.

Changes between states of matter, such as melting, freezing, and boiling, are classified as physical changes.

Burning wood is an example of a chemical change, as it produces ash and gases.

Mixing air into egg whites is a physical change, as it does not alter the chemical structure of the egg whites.

A physical change does not change the substance's chemical identity, while a chemical change results in the formation of new substances.

Indicators of a chemical change include color change, gas production, temperature change, and the formation of a precipitate.

Many physical changes can be reversed, such as freezing and melting, but some may not be easily reversible.