Physical/Chemical Changes

What is a physical change?

• A change in the size, shape, or phase of matter, without the matter changing chemically.

• A way to describe how matter reacts with other matter.

• The process by which a certain substance becomes a different substance.

Ice being broken into small bits is an example of a ___________________ change.

• physical
• chemical
• different

In a physical change the matter does not change ___________________.

• decomposition
• chemically
• color

In a chemical change a ___________________ substance is formed.

• different
• solid
• new

A chemical ___________________ is a way to describe how matter reacts with other matter.

• property
• change
• reaction

Flammability is the chemical property describing how a substance ___________________.

• freezes
• burns
• smells

_____ is a chemical reaction in green plants that produces energy and oxygen.

• decomposition

• photosynthesis

• combustion

Sharpening a pencil is a _____ change.

• physical

• chemical

Density is a _____ property.

• chemical

• physical

Heat changing water to steam is a _____ change.

• physical

• chemical