Physical Properties of Matter

Which describes a feature of the physical properties of all substances?

• can dissolve in water

• can conduct heat and electricity

• rearranges atoms to form new substances

• does not change the identity of a substance

Tags

NGSS.MS-PS3-4

Which would show an example of how physical changes are reversible?

• cutting a gold bar in two pieces and then putting the pieces next to each other

• burning a match and then relighting it

• melting tin and then cooling it into a mold

• combining sodium and chlorine to make the new material of table salt

Tags

NGSS.MS-PS1-4

Which is most likely a physical change?

• cutting a substance into four pieces

• burning a substance into ash and smoke

• reacting a substance chemically to form a new substance

• combining a substance with water to make rust

The density of solid aluminum is 2.70 g/cm3. If a 1g piece of aluminum is dropped in a cup of water, what will happen to the aluminum? (The density of water is 1.00 g/cm3.)

• It will sink to the bottom.

• It will float to the top.

• It will hover in the middle.

• It will move up and down.

What is conserved in physical changes?

• shape

• energy

• mass

• density

What happens to the total mass of a substance undergoing a physical change?

• It stays the same.

• It doubles.

• It triples.

• It is reduced.

An amount of nitrogen undergoes a physical change and increases its volume. What can be known about this physical change?

• The boiling point of the nitrogen increased.

• The mass of nitrogen increased.

• The color changed.

• The density changed.

Tags

NGSS.MS-PS1-4

Which property of physical changes explains why matter is conserved in a physical change?

• The arrangements of particles do not change, and the bonds between atoms do not break.

• Mass, not energy, changes in a physical change.

• Energy and mass change in a physical change.

• The bonds between atoms do not break; it is only the arrangement that changes.

Tags

NGSS.MS-PS1-4

Which statement about the physical change of liquid water boiling into steam is true?

• The heat added represents an energy change.

• The action cannot be reversed.

• The steam cannot conserve mass.

• The weight lost represents a mass change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

What is an example of a physical change?

• having less ash than the paper that was burned to form it

• ice forming and then melting back into water

• rust having a different identity than the iron it forms on

• the irreversible reaction of vinegar and baking soda