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Arkansas ATLAS · Grade 8 · Science

Arkansas ATLAS Grade 8 Science Practice Test

Build Grade 8 Arkansas ATLAS Science readiness with five focused 10-question practice sets covering matter, energy, forces, cells, heredity, Earth systems, and scientific evidence.

Arkansas ATLAS Grade 8 Science practice sets

This Arkansas ATLAS Grade 8 Science Practice Test page provides five short practice sets with 10 original multiple-choice questions each. The sets support supplemental review of physical science, life science, heredity, evolution, Earth systems, engineering, data, and environmental evidence.

Grade 8 Science skills covered

  • Matter, chemical reactions, conservation of mass, energy transfer, forces, motion, circuits, and waves
  • Cell structures, body systems, photosynthesis, cellular respiration, ecosystems, populations, and interactions
  • DNA, genes, alleles, heredity, mutations, natural selection, adaptation, common ancestry, and biodiversity
  • Plate tectonics, weather and climate, water resources, seasons, lunar patterns, carbon cycling, and human impacts
  • Engineering criteria and constraints, variables, models, data displays, uncertainty, design revisions, and evidence-based claims

How to use this page

Complete one 10-question set at a time. Identify the evidence in each scenario, compare patterns in data, and review the explanation for every missed or guessed answer.

This is supplemental State Test Practice, State Assessment Practice, and Standardized Test Practice. It does not replace current Arkansas Department of Education ATLAS guidance, official blueprints, accommodations, or testing schedules.

For the broader Arkansas assessment hub, visit Arkansas State Assessments.

Select a test

5 Tests
1. Test2. Test3. Test4. Test5. Test

1. Test

Arkansas ATLAS Grade 8 Science Practice Questions

A 10-question Arkansas ATLAS Grade 8 science practice set on matter, reactions, and energy, with answers and explanations.

Read each scenario carefully, choose one answer, and review the explanation after responding.

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

Which observation is evidence of a physical change rather than a chemical change?

Please select an answer first.

Correct answer: A

The correct answer is Water evaporates from a shallow dish.

  1. Identify the science idea: Decide whether the question is about matter, energy, forces, cells, heredity, Earth systems, or scientific evidence.
  2. Use the evidence: Evaporation changes the state of water, but the substance remains water and no new substance is formed.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

Evaporation changes the state of water, but the substance remains water and no new substance is formed.

2. QuestionMultiple choice

Why should the total mass stay the same when a reaction occurs in a sealed container?

Please select an answer first.

Correct answer: B

The correct answer is Atoms are rearranged but are not created or destroyed.

  1. Identify the science idea: Decide whether the question is about matter, energy, forces, cells, heredity, Earth systems, or scientific evidence.
  2. Use the evidence: In a sealed system, matter cannot enter or leave, and chemical reactions rearrange conserved atoms into new substances.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

In a sealed system, matter cannot enter or leave, and chemical reactions rearrange conserved atoms into new substances.

3. QuestionMultiple choice

Which statement describes a balanced chemical equation?

Please select an answer first.

Correct answer: C

The correct answer is The same number of each type of atom appears on both sides.

  1. Identify the science idea: Decide whether the question is about matter, energy, forces, cells, heredity, Earth systems, or scientific evidence.
  2. Use the evidence: A balanced equation follows conservation of atoms by showing equal numbers of each element in the reactants and products.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

A balanced equation follows conservation of atoms by showing equal numbers of each element in the reactants and products.

4. QuestionMultiple choice

Melting ice requires energy from the surroundings. What type of process is melting?

Please select an answer first.

Correct answer: D

The correct answer is An endothermic process.

  1. Identify the science idea: Decide whether the question is about matter, energy, forces, cells, heredity, Earth systems, or scientific evidence.
  2. Use the evidence: Melting absorbs thermal energy so particles can move from a more ordered solid arrangement into a liquid arrangement.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

Melting absorbs thermal energy so particles can move from a more ordered solid arrangement into a liquid arrangement.

5. QuestionMultiple choice

Why does a disposable hand warmer become hot after it is opened?

Please select an answer first.

Correct answer: A

The correct answer is A reaction releases thermal energy to the surroundings.

  1. Identify the science idea: Decide whether the question is about matter, energy, forces, cells, heredity, Earth systems, or scientific evidence.
  2. Use the evidence: The reaction in a hand warmer is exothermic because it transfers thermal energy to the surrounding air and hands.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

The reaction in a hand warmer is exothermic because it transfers thermal energy to the surrounding air and hands.

6. QuestionMultiple choice

Two objects have the same volume. Object X has more mass than Object Y. Which object has greater density?

Please select an answer first.

Correct answer: B

The correct answer is Object X.

  1. Identify the science idea: Decide whether the question is about matter, energy, forces, cells, heredity, Earth systems, or scientific evidence.
  2. Use the evidence: Density compares mass with volume. When volume is the same, the object with greater mass has greater density.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

Density compares mass with volume. When volume is the same, the object with greater mass has greater density.

7. QuestionMultiple choice

Which example shows thermal energy transfer by convection?

Please select an answer first.

Correct answer: C

The correct answer is Warm water rises while cooler water sinks in a heated pot.

  1. Identify the science idea: Decide whether the question is about matter, energy, forces, cells, heredity, Earth systems, or scientific evidence.
  2. Use the evidence: Convection transfers thermal energy through the movement of a fluid such as water or air.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

Convection transfers thermal energy through the movement of a fluid such as water or air.

8. QuestionMultiple choice

What is the main effect of a catalyst in a chemical reaction?

Please select an answer first.

Correct answer: D

The correct answer is It changes the reaction rate without being consumed.

  1. Identify the science idea: Decide whether the question is about matter, energy, forces, cells, heredity, Earth systems, or scientific evidence.
  2. Use the evidence: A catalyst provides a different pathway that can increase reaction rate while remaining available after the reaction.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

A catalyst provides a different pathway that can increase reaction rate while remaining available after the reaction.

9. QuestionMultiple choice

A solution has a pH of 7. Which description is most accurate?

Please select an answer first.

Correct answer: A

The correct answer is The solution is neutral.

  1. Identify the science idea: Decide whether the question is about matter, energy, forces, cells, heredity, Earth systems, or scientific evidence.
  2. Use the evidence: On the common pH scale, a value of 7 represents a neutral solution at standard conditions.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

On the common pH scale, a value of 7 represents a neutral solution at standard conditions.

10. QuestionMultiple choice

What happens to gas particles when the temperature of a sealed container increases?

Please select an answer first.

Correct answer: B

The correct answer is The particles move faster and collide with the container more often.

  1. Identify the science idea: Decide whether the question is about matter, energy, forces, cells, heredity, Earth systems, or scientific evidence.
  2. Use the evidence: Increasing temperature gives gas particles more kinetic energy, which can increase the frequency and force of collisions.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

Increasing temperature gives gas particles more kinetic energy, which can increase the frequency and force of collisions.

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Frequently asked questions about Arkansas ATLAS Grade 8 Science Practice Test

Which science skills are covered?

The page covers matter, energy, forces, cells, ecosystems, heredity, evolution, Earth systems, engineering, data, and evidence.

How many questions are included?

There are five practice sets with 10 questions each, for 50 questions in total. Each set can be completed separately.

Are these official ATLAS questions?

No. These are original supplemental practice questions. Check the latest Arkansas Department of Education information for official materials, standards, accommodations, and policies.