Physical/Chemical Properties and Changes

Which of the following is true?

• A physical property can only be seen.

• A physical property describes how matter can change when exposed to air.

• A physical property is something that can be observed about the substance by itself.

• A physical property can only be observed when two types of matter interact.

Which of the following are physical properties of the matter pictured?

Check all that are true

• reacts to oxygen

• smooth

• malleable (bendable)

• reddish-brown

• shiny

A chemical property describes how matter __________.

• smells

• reacts with another type of matter

• looks under a microscope

• dissolves when made into a solution

Physical properties are to __________, as chemical properties are to __________.

• chemical changes; physical changes

• physical changes ; chemical changes

• matter ; matter

• chemical reactions ; chemical reactions

Which of these would NOT be chemical properties of oxygen?

Check all that are true.

• has no color

• reacts to moisture and iron to form rust

• helps many substances burn

• has no odor

A physical change can change the __________ of a substance but cannot form new matter.

Check all that are true.

• state

• size

• color

• shape

Which statement best describes what is happening in the images?

• a physical change

• a chemical change

• both a physical and a chemical change

• dissolving

Jack leaves solid butter near a warm surface. When Jack returns, the butter has turned into a liquid. Jack's friend Elijah insists this is a chemical change. Is Elijah right?

• no, because no new matter was formed

• yes, because the matter changed states

• no, because the butter didn’t have enough time to go through a chemical change

• yes, because melted butter is a new type of matter

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Imagine the substances below are combined. None of them dissolve and no new matter is created. What happened?

• A physical change that is a solution.

• A physical change that is a mixture.

• A chemical change that is a mixture.

• A chemical change that is a solution.

Tags

NGSS.MS-PS1-2

When combined, the powder and water create a solution because the powder dissolves evenly into the water. This is an example of a __________. If the water were evaporated from the solution, the powder would __________.

• physical change ; have disappeared

• physical change ; remain

• chemical change ; be a new matter

• chemical change ; remain

Tags

NGSS.MS-PS1-2