FIRST LET’S REVIEW :Physical and Chemical

ChangesPhysical Change Chemical Change

O Doesn’t create a new substance

O Changes the form or shape

O Phase changes are physical changes

Solid → liquid → gasGas → liquid → solid

Solid → gas

O Change in matter which creates a new substance

O How can I tell if a chemical change has occurred?O A gas is produced

(bubbles)O A change in colorO A change in

temperature

Is the formation of rust a physical or chemical

change?

CHEMICAL

Is evaporation of water a physical or chemical

change?

PHYSICAL

Is tearing paper in strips a physical or chemical

change?

PHYSICAL

Are exploding firecrackers a physical or

chemical change?

CHEMICAL

Is burning a match a physical or chemical

change?

CHEMICAL

Which is an example of a chemical

change?1.a balloon that is blown up.

2.Ice melting.3.paper burning4.a metal pan heating on the stove.

Which is an example of a physical change?

1.Metal rusting.2.Silver tarnishing.3.Water boiling.4.Paper burning.

Which of the following is an example of a physical

change? 1.Mixing baking soda and vinegar

together, and this causes bubbles and foam.

2.A glass cup falls from the counter and shatters on the ground.

3.Lighting a piece of paper on fire and the paper burns up and leaves ashes.

4.Baking a birthday cake for your mother

Which of the following is an example of a chemical

change?1.Filling up a balloon with hot air.2.Taking a glass of water and freezing

it by placing it in the freezer.3.A plant collecting sunlight and

turning it into food.4.Your dog ripping up your

homework.