States of Matter

Question 1

solid:

Answer 1

state of matter that has a fixed shape and volume

Question 2

liquid:

Answer 2

state of matter that has a fixed volume, but no fixed shape

Question 3

gas:

Answer 3

state of matter with no fixed shape or volume

Question 4

properties:

Answer 4

characteristics or features of an object or substance

Question 5

diffusion:

Answer 5

the spreading of one substance through another due to the movement of their particles

Question 6

mass:

Answer 6

the quantity of matter in an object (usually measured in grams or kilograms)

Question 7

fluid:

Answer 7

a substance that flows and has no fixed shape. Gases and liquids are fluids.

Question 8

melting point:

Answer 8

the temperature at which a solid substance turns into a liquid (melts) or a liquid turns into a solid (freezes)

Question 9

boiling point:

Answer 9

the temperature at which a liquid changes to a gas

Question 10

sublimation:

Answer 10

the change in state from a solid into a gas (or from a gas into a solid) without first becoming a liquid

Question 11

precipitation:

Answer 11

falling water in solid or liquid form. The type of precipitation depends mostly on the temperature in the clouds and the air around them.

Question 12

meteorologist:

Answer 12

scientist who uses observation of the atmosphere to predict or explain the weather

Question 13

particle model:

Answer 13

a description of the moving particles that make up all matter and how they behave. The model explains the properties of solids, liquids and gases.

Question 14

expands:

Answer 14

increase in size due to the movement of particles in a substance

Question 15

contracts:

Answer 15

shorten or become smaller in size