Chemical Properties

How do we know if it is a chemical change?

• can be undone
• cannot be undone
• both
• none

Which is a physical change?

• burning match 
• vinegar in baking soda 
• melting butter
• cooking an egg

Evidence of a physical change.

• New substance
• Shape Change
• Light produced
• Gas released.

What is a chemical change?

• Forming a new substance

• When two or more substances combine to make a greater one

• When two or more substances combine to make a new chemical substance

• Combing substances

Which of the following would be considered a physical property?

• Colour

• Flammability

• pH

• Reactivity

Which is an example of a chemical change?

• baking a cake
• freezing water
• crushing a can
• breaking an egg

Which example best describes a physical change?

• iron rusting
• charcoal burning
• an ice cube melting
• a marshmallow burning

A gas

• has a definite shape but no definite volume
• has a definite volume but no definite shape
• has fast-moving particles

Freezing

• Solid to gas
• Liquid to solid
• Gas to solid
• Liquid to gas

Which state of matter has tightly packed molecules?

• solid
• liquid
• gas