Physical and Chemical Changes

By Jonathan Curran

Physical Properties

Any characteristic of a material that can be observed or measured without

changing the identity of the material

Examples:

Color and Shape

Length and Mass

Volume and Density (D=M/V

Physical Changes

The physical property of a substance change, but the identity of the substance does not change

Examples:

changing from one state of matter to the next (ice melts to liquid, liquid boils to steam.)

Melting point = 0 degrees celsius, Boiling point = 100 degrees celsius

melting ice, smashing glass, tearing paper

Chemical Properties

Any charecteristic that gives a substance the ability to undergo a change that results in a whole new substance

Examples:

Flamability (ablity to burn)

Reacts with oxygen (ability to rust)

Reacts with light (pictures being developed)

Reacts with water (medicine dissolving in water

Chemical Change

A change in the identity of a substance due to the chemical properties of that substance (you have a new substance thar is not reversible)

Examples:

Flamabilty (ability to burn)

Reacts with oxygen (fruit rotting)

Heat and light (vitamins can change when exposed to light)

Electricity (water can be broken down with electricity)