Physical and Chemical Changes

By: Raul Habib

Physical Change

Definition: A change in matter that does not affect it's chemical composition.

Examples: Cutting a pear, cutting an apple, and or cutting paper.

Chemical Change

Definition: A chemical reaction: a process that changes substances.

Examples: Burning wood, burning salt and or burning paper.

Physical Property

Definition: Is a characteristic of a substance that can be observed without changing the substance into something else.

Examples: Sand paper is rough, water is slippery and cotton is soft.

Chemical Property

Definition: Is characteristic when a substance interacts with another substance.

Examples: The making of salt, the making of dry ice and the making of ink

The 4 Indicators: Change in pH, temperature, color, the appearance of foam, and the changes in volume or density.