unit 3 topic 4

Question 1

what is the meaning of expand

Answer 1

to increase in volume

Question 2

what is the meaning of contract

Answer 2

to shrink or decrease in volume

Question 3

what is the state of matter of a solid in room temperature

Answer 3

A solid shape material keeps the materials shape, and size.

Question 4

what is the state of matter of a liquid in room temperature

Answer 4

in the liquid state, materials have a definite size (volume), but not a fixed shape.

Question 5

what is the state of matter of gas in room temperature

Answer 5

gases have no definite shape or volume, they take the of the container and take its shape.

Question 6

what happens to liquid, gases, and solids when they are warmed

Answer 6

the particle model of matter says that their particles move faster and spread apart.

Question 7

what happens to liquid, gases, and solids when they are cooled

Answer 7

Falling temperatures mean that average particles motion is slowing down.

Question 8

Which state of matter shows the largest change in volume when warmed or cooled? Which state shows the smallest change?

Answer 8

Warmed- shows the largest change in volume

cooled- shows the smallest change in volume

Question 9

does energy have mass

Answer 9

no

Question 10

light does not take up ________ or ________

Answer 10

space or mass

Question 11

what is a pure substance

Answer 11

is a type of matter that is made of only one kind of particle.

Question 12

what is a example of a pure substance

Answer 12

solid, liquid, or gas 🤙🏼