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

This lesson includes 1 additional question and 3 additional question variations for subscribers.

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