WorksheetsPhase Changes (2021)
Total questions: 25
Worksheet time: 19mins
5. What is it called when a solid turns directly into a gas?
Sublimation
Condensation
Liquid
The phase change from water vapor to liquid water is known as...
evaporation
precipitation
condensation
sublimation
Between which two points is melting occurring?
A - B
B - C
C - D
D - E
E - F
Between which two points is the gas heating up?
A - B
B - C
C - D
D - E
E - F
Between which two points is evaporation occurring?
A - B
B - C
C - D
D - E
E - F
Between which points is the temperature of the substance remaining constant?
A-B only.
A-B, C-D, and E-F
B-C only.
B-C and D-E
A substance's heating curve is shown in the graph. What is its boiling point?
100oC
60oC
80oC
20oC
The graph shows a cooling curve. What is happening during segment DE?
boiling
condensation
freezing
melting
What is happening to the particles in the substance between points A and B?
Melting
Freezing
Speeding Up
Slowing Down
Where on this graph are phase changes taking place? (you may need to check multiple boxes)
1
2
3
4
5
What line segment represents only the solid state?
A - B
B - C
C - D
D - E
Which segment would use the latent heat of fusion?
A - B
B - C
C - D
D - E
What state(s) of matter are present at D - E?
Solid-liquid
Liquid
Liquid-gas
Gas-Solid
Between which points is the substance changing state?
A-B only.
A-B, C-D, and E-F
B-C only.
B-C and D-E
Between which two points would you use the heat of vaporization?
A - B
B - C
C - D
D - E
E - F
Between which set of points would you use latent heat values?
(you may need to check multiple boxes)
A <----> B
B <----> C
C <----> D
D <----> E
E <----> F
When sample is being heated , but the temperature remains constant , then this heat is used to
change the sample's state of matter
increase the kinetic energy of particles
Heat always moves:
From a high temperature object to a lower temperature object.
From a lower temperature object to a higher temperature object.
From an object with lower kinetic energy to an object with higher kinetic energy.
From an object of higher mass to an object of lower mass.
