P6.2/P6.3 - States of matter

Question 1

Properties of a solid

Answer 1

• no flow
  -fixed shape
  -fixed volume
  -high density

Question 2

Properties of a liquid

Answer 2

-flow
-fits container’s shape
-fixed volume
-higher density than gas

Question 3

Properties of a gas

Answer 3

-flow
-fills container
-volume can be changed
-low density

Question 4

physical change

Answer 4

-no new substances made
-reversible
-eg change of state

Question 5

sublimation

Answer 5

-solid to gas
-mass is conserved

Question 6

Kinetic theory of water

Answer 6

-particles in a solid vibrate in their fixed position
-particles in a liquid move at random
-particles in a gas move faster/more far apart = more energy

Question 7

temp of matter when changing state

Answer 7

remains the same

Question 8

melting point

Answer 8

when substance melts
-same as freezing point

Question 9

boiling point

Answer 9

-when substance boils
-same as condensing point

Question 10

evaporation

Answer 10

-occurs from surface of liquid
-temp is below boiling point

Question 11

latent heat

Answer 11

-energy transferred to a substance as is changes state

Question 12

fusion

Answer 12

melting
-different solids may fuse when melted

Question 13

evaporation definition in terms of vapour

Answer 13

-liquid boils
-bubbles of vapour form within liquid
-rise to surface to be released