Exploring Chemical and Physical Changes in Matter

What happens to Mark's water after he puts it in the freezer?

• It evaporates.

• It becomes ice.

• It turns into steam.

• It remains the same.

Tags

NGSS.MS-PS1-4

What remains the same when water changes from solid to liquid?

• The temperature.

• The state of matter.

• The H2O molecules.

• The volume.

Tags

NGSS.MS-PS1-4

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

• Iron rusting.

• Burning wood.

• Cooking an egg.

• Bending iron.

What happens to iron when it rusts?

• It melts.

• It bends.

• It turns into a new material.

• It evaporates.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the chemical formula for rust?

• C6H12O6

• CO2

• H2O

• Fe2O3

Tags

NGSS.MS-PS1-5

What happens to sugar in your body when you breathe in oxygen?

• It turns into rust.

• It turns into carbon dioxide and water.

• It remains the same.

• It evaporates.

Tags

NGSS.MS-LS1-7

What is the chemical formula for sugar?

• C6H12O6

• H2O

• CO2

• Fe2O3

Tags

NGSS.MS-PS1-1

What happens to octane in a car engine?

• It turns into water and carbon dioxide.

• It remains the same.

• It turns into sugar.

• It evaporates.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the chemical formula for octane?

• CO2

• H2O

• C6H12O6

• C8H18

Which type of change is easier to reverse?

• Neither can be reversed

• Physical change

• Chemical change

• Both are equally easy