Physical and Chemical CHANGES

Physical Changes

Matter changes size, shape or form. It does not become

a new substance.

Examples

Breaking something (glass)

Ripping Paper

Mixing items with

no chemical reaction

Clay

Cutting hair

Cutting materials or food into tiny pieces

Freeze or melt water

Mow grass

Writing on paper or board

Chemical Changes

Changes the substance into a new substance.

Examples

Fire burning

Apple turning brown

Milk souring

Mixing baking soda and vinegar

Eating food/Digesting food

Rusting

Decomposing

Answer: A

Answer: D

NOTE: A chemical/physical reaction is a chemical/physical change

Answer: A

Answer: D

Answer: D

Answer: C

Answer: A

Answer: D

Answer: D

Answer: C

Answer: D

Answer: B

Answer: D

Answer: D

Answer: B

Answer: D

Answer: A

Answer: A

Physical and Chemical PROPERTIES

Physical Properties

A quality or characteristic of something that you can touch, see,

smell, taste, or hear.

Observe these two chemicals and write the physical properties.

Examples:

Mass-amount of matter in an object

Volume- How much space an object takes up.

Color

Texture- Identifying quality of the object (rough, smooth,

etc.)

Odor

Phase/State – solid, liquid or gas

Hardness/Malliability- How well an object resists scratching

Flexibility- Bending without breaking

Holds shape/takes shape of container- liquid takes the shape

of a container.

Chemical Properties

Qualities or characteristics that can only be seen when

a substance reacts with another substance.

Examples:

Flammability- ability of a substance to burn or ignite

Reactivity- Rate at which a chemical substance

undergoes a chemical change. Ex: Two chemicals might

react together to form a toxic gas.

Answer: C

Answer: B

Answer: D

Which describes a chemical property of a

substance?

a. able to float in water

b. able to break easily

c. able to melt at high temperatures

d. able to react with oxygen

Answer: D