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Grade 5 Science · Conservation of Matter

Grade 5 Conservation of Matter Practice Test

Build Grade 5 Science skills with five 10-question practice tests on closed systems, mass, physical and chemical changes, particle models, and scientific evidence.

Conservation of Matter Practice Tests

These Grade 5 Science practice tests help students track matter during physical changes, chemical reactions, and mixtures. Students use closed systems, mass measurements, particle models, and observations to explain why matter is rearranged rather than created or destroyed.

Skills covered

  • Explaining conservation of matter in closed systems
  • Comparing mass before and after physical changes
  • Tracking gases during evaporation and chemical reactions
  • Distinguishing rearrangement from creation or destruction
  • Using particle models to represent changes
  • Planning fair measurements and repeated trials
  • Connecting observations and data to scientific conclusions

How to use these practice tests

First identify the system boundary and decide whether matter can enter or leave. Then track solids, liquids, and gases, compare measurements, and use observations to explain what happened during the change.

For more Grade 5 Science practice, return to the Grade 5 Science category.

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5 Tests
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1. Test

Grade 5 Conservation of Matter Practice Tests

A 10-question Grade 5 Science practice test on conservation of matter, closed systems, mass, physical and chemical changes, particles, and scientific evidence.

Track the matter in each system, decide whether the system is closed, and use measurements or observations to select the best explanation.

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

What does conservation of matter mean?

Please select an answer first.

Correct answer: A

The correct answer is Matter is not created or destroyed during a change, although it can change form..

  1. Identify the system: Decide whether the matter is in a closed system and what change or reaction occurred.
  2. Track the matter: Matter can be rearranged or change form, but the total amount remains the same in a closed system.
  3. Choose the evidence-based answer: The correct choice is Matter is not created or destroyed during a change, although it can change form..

Matter can be rearranged or change form, but the total amount remains the same in a closed system.

2. QuestionMultiple choice

Which system is best for measuring whether matter is conserved during a reaction?

Please select an answer first.

Correct answer: B

The correct answer is A sealed container that keeps gases and liquids inside..

  1. Identify the system: Decide whether the matter is in a closed system and what change or reaction occurred.
  2. Track the matter: A closed system keeps matter inside so the total mass can be compared before and after the change.
  3. Choose the evidence-based answer: The correct choice is A sealed container that keeps gases and liquids inside..

A closed system keeps matter inside so the total mass can be compared before and after the change.

3. QuestionMultiple choice

A sealed bag contains ice. The ice melts. What happens to the total mass in the bag?

Please select an answer first.

Correct answer: C

The correct answer is It stays the same because the water changes state but remains inside..

  1. Identify the system: Decide whether the matter is in a closed system and what change or reaction occurred.
  2. Track the matter: Melting changes solid water to liquid water without removing matter from the sealed bag.
  3. Choose the evidence-based answer: The correct choice is It stays the same because the water changes state but remains inside..

Melting changes solid water to liquid water without removing matter from the sealed bag.

4. QuestionMultiple choice

Why can the mass of an open container change during a reaction that produces gas?

Please select an answer first.

Correct answer: D

The correct answer is Some gas may leave the container, so the measured system no longer includes all the matter..

  1. Identify the system: Decide whether the matter is in a closed system and what change or reaction occurred.
  2. Track the matter: Matter may leave an open system even though the total matter is conserved when the gas is included.
  3. Choose the evidence-based answer: The correct choice is Some gas may leave the container, so the measured system no longer includes all the matter..

Matter may leave an open system even though the total matter is conserved when the gas is included.

5. QuestionMultiple choice

Which measurement is most useful for checking conservation of matter?

Please select an answer first.

Correct answer: A

The correct answer is The total mass before and after the change..

  1. Identify the system: Decide whether the matter is in a closed system and what change or reaction occurred.
  2. Track the matter: Comparing total mass provides quantitative evidence about the amount of matter.
  3. Choose the evidence-based answer: The correct choice is The total mass before and after the change..

Comparing total mass provides quantitative evidence about the amount of matter.

6. QuestionMultiple choice

A student crushes a cracker into crumbs. What happens to the matter?

Please select an answer first.

Correct answer: B

The correct answer is The cracker has the same matter, but its size and shape change..

  1. Identify the system: Decide whether the matter is in a closed system and what change or reaction occurred.
  2. Track the matter: Crushing is a physical change that rearranges the cracker without removing its matter.
  3. Choose the evidence-based answer: The correct choice is The cracker has the same matter, but its size and shape change..

Crushing is a physical change that rearranges the cracker without removing its matter.

7. QuestionMultiple choice

What happens to the particles of water when liquid water freezes?

Please select an answer first.

Correct answer: C

The correct answer is They move less freely and arrange into a solid structure, but the particles remain water..

  1. Identify the system: Decide whether the matter is in a closed system and what change or reaction occurred.
  2. Track the matter: Freezing changes particle motion and arrangement while conserving the water matter.
  3. Choose the evidence-based answer: The correct choice is They move less freely and arrange into a solid structure, but the particles remain water..

Freezing changes particle motion and arrangement while conserving the water matter.

8. QuestionMultiple choice

Which statement about matter in a closed system is correct?

Please select an answer first.

Correct answer: D

The correct answer is The total mass remains constant even if substances change form or react..

  1. Identify the system: Decide whether the matter is in a closed system and what change or reaction occurred.
  2. Track the matter: A closed system includes all matter, so its total mass stays constant during changes.
  3. Choose the evidence-based answer: The correct choice is The total mass remains constant even if substances change form or react..

A closed system includes all matter, so its total mass stays constant during changes.

9. QuestionMultiple choice

A student weighs a closed container before and after sugar dissolves in water. What should happen?

Please select an answer first.

Correct answer: A

The correct answer is The total mass should be nearly the same..

  1. Identify the system: Decide whether the matter is in a closed system and what change or reaction occurred.
  2. Track the matter: Dissolving spreads sugar through water but does not remove matter from the closed container.
  3. Choose the evidence-based answer: The correct choice is The total mass should be nearly the same..

Dissolving spreads sugar through water but does not remove matter from the closed container.

10. QuestionMultiple choice

Which evidence best supports conservation of matter?

Please select an answer first.

Correct answer: B

The correct answer is The measured total mass remains the same while the substances change appearance..

  1. Identify the system: Decide whether the matter is in a closed system and what change or reaction occurred.
  2. Track the matter: Unchanged total mass is direct quantitative evidence that matter remains in the system.
  3. Choose the evidence-based answer: The correct choice is The measured total mass remains the same while the substances change appearance..

Unchanged total mass is direct quantitative evidence that matter remains in the system.

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Frequently asked questions about Grade 5 Conservation of Matter

What does conservation of matter mean?

Matter is not created or destroyed during a change; it can be rearranged or change form, especially when all matter is included in a closed system.

Why are closed systems useful in experiments?

A closed system keeps matter from entering or leaving, so scientists can compare the total mass before and after a change.

How many questions are on this page?

The page includes five mini tests with 10 questions each, for 50 Grade 5 Conservation of Matter questions in total.