Physical & Chemical Changes Review

How can liquid water be changed into a gas?

• by heating

• by cooling

• by decaying

• by rusting

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of these is a chemical change that happens when a piece of iron rusts?

• It begins to smell bad.

• It gives off heat.

• It turns into a hard matter.

• It becomes brittle and easy to break.

Tags

NGSS.MS-PS1-2

Which statement is true of water in its liquid state of matter?

• It has a temperature below freezing.

• It has a definite shape and volume.

• It takes the shape of its container.

• It cannot be seen.

A scientist mixes two liquids together. The result is a new solid substance. Which of these is true about this solid?

• The solid has different properties now compared to the two liquids.

• The solid was formed by a physical change, not a chemical change, in the two liquids.

• The solid can be separated back into the two liquids.

• The solid has the same state of matter as the two liquids.

Tags

NGSS.MS-PS1-2

Choose the characteristics of solid water.

• It takes the shape of its container.

• It has no shape.

• It has a definite shape.

• It occurs above 32 degrees F (0 degrees C)

• It occurs below 32 degrees F (0 degrees C)

Choose the characteristics of liquid water.

• It has a definite shape.

• It has no shape.

• It takes the shape of its container.

• It can only occur above 32 degrees F (0 degrees C)

• It only occurs below 32 degrees F (0 degrees C)

Tags

NGSS.MS-PS1-4

Select the PHYSICAL changes:

• A glass breaking.

• An egg cooking on the stove.

• Wood burning on a fire.

• Folding paper into a paper airplane.

• Freezing water.

Select the CHEMICAL changes:

• Boiling water.

• Folding paper into a paper airplane.

• Burning wood on a fire.

• Fireworks going off.

• Cooking an egg on the stove.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Select the PHYSICAL changes:

• Boiling water.

• Chopping wood.

• Burning wood.

• Freezing water.

• Cutting hair.

Tags

NGSS.MS-PS1-4

Select the CHEMICAL changes:

• Dying your hair.

• Cutting your hair.

• Burning toast.

• Cutting toast into triangles to eat.

• Brushing your hair.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5