Lesson Worksheet: Changes of State Science
In this worksheet, we will practice describing and explaining changes of state, and identifying these changes through diagrams and heating curves.
Q1:
Which of the following is not the name for a change of state?
- AMelting
- BFreezing
- CDissolution
- DVaporization
- ECondensation
Q2:
Which category of energy does a substance usually gain or lose to undergo a change of state?
- AGravitation potential energy
- BElectrical potential energy
- CElastic potential energy
- DThermal energy
- EMagnetic energy
Q3:
The diagram below outlines the changes in state between solids, liquids, and gases. What name is given to process X?
- AVaporization
- BMelting
- CSublimation
- DCondensation
- EFreezing
Q4:
In the diagram below, the attractive forces between two molecules in a liquid are indicated by an arrow. The larger the arrow, the stronger the attractive force.
What will these arrows look like if the liquid undergoes a change of state to a gas?
- A
- B
- C
Q5:
The graph below shows how the temperature of a solid changes over time when heated. The part of the graph marked X indicates the point at which a change of state from a solid to liquid occurs. At this point, the temperature remains constant despite there being continuous heating. What name is given to the heat required for a change of state to occur?
- APhase heat
- BSpecific heat
- CExcess heat
- DLatent heat
- ESensible heat
Q6:
Order the following statements to describe what happens when a solid is heated.
- A4, 3, 1, 2
- B4, 1, 3, 2
- C2, 3, 1, 4
- D3, 1, 4, 2
- E1, 4, 2, 3
Q7:
The diagram below shows the arrangement of particles before and after a change of state. Which change in state is shown in the diagram?
- ADepositing
- BMelting
- CVaporization
- DCondensation
- EFreezing
Q8:
The diagram below outlines the changes in state between solids, liquids, and gases. What name is given to process X?
- AMelting
- BSublimation
- CVaporization
- DCondensation
- EFreezing
Q9:
Three states of matter are shown in containers A, B, and C. What change will occur during the process of melting?
- AC to B
- BA to B
- CB to C
- DC to A
- EA to C
Q10:
The diagram below shows a progressive change of state. Which of the arrows indicates an increase of temperature?
- AA
- BB
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