Chemical and Physical Change

An example of a liquid turning into a gas is:

• a chocolate bar melting

• steam escaping from a cup of hot chocolate

• an ice cream cone dripping

• a stick of butter getting warm

Tags

NGSS.MS-PS1-4

If you dissolved a lot of salt in some water in a large, flat dish and put the dish in bright sunlight on a hot day, what would be left in the dish after a long time?

• dry salt

• water with no salt

• the same salty water as before

• nothing

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

Which of the following signs show that a chemical change has taken place?

• production of a gas

• change in energy

• production of an odor

• all of these

Tags

NGSS.MS-PS1-2

Blow drying my hair is an example of a physical change. What is the evidence of this?

• Fire

• Color Change

• New substance

• State Change

Ice cube melting ?

• Chemical change

• Physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

What happens in ALL chemical changes?

• A new substance is formed

• Change in state of matter

• Bubbles are produced

• An explosion

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which type of change can be undone?

• Chemical

• Physical

Tags

NGSS.MS-PS1-4

A Chemical Change is also known as what?

• Physical Change

• Chemical Reaction

• Chemical Property

• Physical Property

Which of the following is an example of a physical change?

• A glass falling and shattering on the floor.

• Baking a birthday cake

• Baking soda and vinegar mixing together.

• Burning a piece of paper.

True or False: twisting a wire is an example of a physical change.

• True

• False