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Matter and Particles Practice Tests

These Grade 7 Science practice tests build understanding of matter, atoms, elements, compounds, mixtures, particle motion, states of matter, density, and scientific measurement.

Skills covered

  • Explaining matter using atoms, molecules, particle motion, and particle arrangement
  • Distinguishing elements, compounds, homogeneous mixtures, and heterogeneous mixtures
  • Describing solids, liquids, gases, changes of state, pressure, and temperature
  • Using mass, volume, density, units, and measurement evidence
  • Applying particle models to real laboratory and everyday situations

How to use these practice tests

For each question, identify the type of matter or change first. Then use the arrangement, motion, identity, and measurement of particles to select the best-supported answer.

For more Grade 7 Science practice, return to the Grade 7 Science category.

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Grade 7 Matter and Particles Practice Tests

Practice Grade 7 Science matter and particles questions about atoms, elements, compounds, mixtures, states, density, and particle models.

Choose the best answer for each question. Review the explanation after submitting your answers.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

How are particles arranged in a solid?

Please select an answer first.

Correct answer: A

The correct answer is They are close together and vibrate around mostly fixed positions..

  1. Identify the particle idea: Determine whether the question concerns atoms, elements, compounds, mixtures, states, motion, or measurement.
  2. Use the particle model: Solid particles are closely packed and vibrate, which gives solids a definite shape and volume.
  3. Check the evidence: Connect the visible property or measurement to the arrangement, motion, or identity of the particles.

Solid particles are closely packed and vibrate, which gives solids a definite shape and volume.

2. QuestionMultiple choice

How are particles arranged in a liquid?

Please select an answer first.

Correct answer: B

The correct answer is They remain close together but can move past one another..

  1. Identify the particle idea: Determine whether the question concerns atoms, elements, compounds, mixtures, states, motion, or measurement.
  2. Use the particle model: Liquid particles stay close enough to maintain a definite volume but flow into the shape of a container.
  3. Check the evidence: Connect the visible property or measurement to the arrangement, motion, or identity of the particles.

Liquid particles stay close enough to maintain a definite volume but flow into the shape of a container.

3. QuestionMultiple choice

How are particles arranged in a gas?

Please select an answer first.

Correct answer: C

The correct answer is They are far apart and move freely to fill their container..

  1. Identify the particle idea: Determine whether the question concerns atoms, elements, compounds, mixtures, states, motion, or measurement.
  2. Use the particle model: Gas particles are spread out, move rapidly, and expand to fill the available volume.
  3. Check the evidence: Connect the visible property or measurement to the arrangement, motion, or identity of the particles.

Gas particles are spread out, move rapidly, and expand to fill the available volume.

4. QuestionMultiple choice

What is melting?

Please select an answer first.

Correct answer: D

The correct answer is The change from solid to liquid.

  1. Identify the particle idea: Determine whether the question concerns atoms, elements, compounds, mixtures, states, motion, or measurement.
  2. Use the particle model: Melting occurs when a solid gains enough energy for its particles to move past one another.
  3. Check the evidence: Connect the visible property or measurement to the arrangement, motion, or identity of the particles.

Melting occurs when a solid gains enough energy for its particles to move past one another.

5. QuestionMultiple choice

What is freezing?

Please select an answer first.

Correct answer: A

The correct answer is The change from liquid to solid.

  1. Identify the particle idea: Determine whether the question concerns atoms, elements, compounds, mixtures, states, motion, or measurement.
  2. Use the particle model: Freezing occurs when a liquid loses enough energy for particles to settle into a more ordered solid arrangement.
  3. Check the evidence: Connect the visible property or measurement to the arrangement, motion, or identity of the particles.

Freezing occurs when a liquid loses enough energy for particles to settle into a more ordered solid arrangement.

6. QuestionMultiple choice

What is condensation?

Please select an answer first.

Correct answer: B

The correct answer is The change from gas to liquid.

  1. Identify the particle idea: Determine whether the question concerns atoms, elements, compounds, mixtures, states, motion, or measurement.
  2. Use the particle model: Condensation occurs when gas particles lose energy and come closer together as a liquid.
  3. Check the evidence: Connect the visible property or measurement to the arrangement, motion, or identity of the particles.

Condensation occurs when gas particles lose energy and come closer together as a liquid.

7. QuestionMultiple choice

What is sublimation?

Please select an answer first.

Correct answer: C

The correct answer is The change from solid directly to gas.

  1. Identify the particle idea: Determine whether the question concerns atoms, elements, compounds, mixtures, states, motion, or measurement.
  2. Use the particle model: Sublimation skips the liquid state, as can happen when certain solids gain enough energy.
  3. Check the evidence: Connect the visible property or measurement to the arrangement, motion, or identity of the particles.

Sublimation skips the liquid state, as can happen when certain solids gain enough energy.

8. QuestionMultiple choice

Why does a gas exert pressure on the walls of its container?

Please select an answer first.

Correct answer: D

The correct answer is Moving gas particles collide with the container walls..

  1. Identify the particle idea: Determine whether the question concerns atoms, elements, compounds, mixtures, states, motion, or measurement.
  2. Use the particle model: Gas particle collisions transfer forces to the walls and produce pressure.
  3. Check the evidence: Connect the visible property or measurement to the arrangement, motion, or identity of the particles.

Gas particle collisions transfer forces to the walls and produce pressure.

9. QuestionMultiple choice

What usually happens to a gas when it is heated in a flexible container?

Please select an answer first.

Correct answer: A

The correct answer is Its particles move faster and the gas may expand..

  1. Identify the particle idea: Determine whether the question concerns atoms, elements, compounds, mixtures, states, motion, or measurement.
  2. Use the particle model: Heating increases particle kinetic energy; in a flexible container, faster particles can spread the gas out.
  3. Check the evidence: Connect the visible property or measurement to the arrangement, motion, or identity of the particles.

Heating increases particle kinetic energy; in a flexible container, faster particles can spread the gas out.

10. QuestionMultiple choice

Why can a liquid boil at a lower temperature at high elevation?

Please select an answer first.

Correct answer: B

The correct answer is Lower air pressure makes it easier for vapor bubbles to form..

  1. Identify the particle idea: Determine whether the question concerns atoms, elements, compounds, mixtures, states, motion, or measurement.
  2. Use the particle model: Boiling occurs when vapor pressure matches surrounding pressure, so lower external pressure lowers the boiling temperature.
  3. Check the evidence: Connect the visible property or measurement to the arrangement, motion, or identity of the particles.

Boiling occurs when vapor pressure matches surrounding pressure, so lower external pressure lowers the boiling temperature.

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