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100+ Free ACAP Science Grade 8 Practice Questions

Prepare for the Alabama Comprehensive Assessment Program (ACAP) Summative Science, Grade 8 exam with instant access — no signup required.

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Key Facts: ACAP Science Grade 8 Exam

ACAP Summative Grade 8 Science is Alabama's spring statewide assessment (~66 items, ~60 blueprint points) with Level 1–4 results; Level 3+4 counts as proficient on state reporting.

Sample ACAP Science Grade 8 Practice Questions

Try these sample questions to test your ACAP Science Grade 8 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which statement BEST describes an atom?
A.It is a particle formed only when two different elements combine chemically.
B.It is always larger than a molecule of the same substance.
C.It is a physical mixture of protons only.
D.It is the smallest particle of an element that still has the properties of that element.
Explanation: An atom is the smallest unit of an element that retains that element's chemical properties. Molecules are made of atoms, not the reverse.
2In the modern model of the atom, where are the protons and neutrons located?
A.In the nucleus at the center of the atom
B.Only in the electron cloud surrounding the atom
C.Evenly spread throughout empty space outside the atom
D.Orbiting the nucleus in fixed circular paths like planets
Explanation: Protons and neutrons make up the dense nucleus at the atom's center. Electrons occupy the surrounding region often called the electron cloud.
3What does the atomic number of an element tell you?
A.The number of electron shells that never change
B.The number of protons in one atom of the element
C.The total mass of one mole of the element in grams
D.The number of neutrons only in every isotope
Explanation: Atomic number equals the number of protons in the nucleus and identifies the element. In a neutral atom it also equals the number of electrons.
4Two atoms have the same number of protons but different numbers of neutrons. These atoms are BEST described as:
A.molecules of a compound
B.completely different elements
C.isotopes of the same element
D.ions of different elements
Explanation: Isotopes are atoms of the same element (same proton number) with different neutron counts, so they have different mass numbers.
5A neutral atom has 11 protons. How many electrons does it have?
A.1
B.12
C.22
D.11
Explanation: In a neutral atom, electrons equal protons so overall charge is zero. Eleven protons means eleven electrons.
6Which subatomic particle has a negative charge?
A.electron
B.proton
C.neutron
D.nucleus
Explanation: Electrons are negatively charged, protons positive, and neutrons uncharged. The nucleus is a region, not a single particle type.
7Why do different pure elements have different chemical properties?
A.They contain different numbers of complete molecules, not atoms.
B.They have different numbers of protons and different electron arrangements that affect how they interact.
C.They all have identical nuclei but different colors.
D.They differ only in the temperature at which they are stored.
Explanation: Element identity and bonding behavior depend on proton number and electron configuration, so different elements react differently.
8Which sample is a pure substance?
A.air from the classroom
B.trail mix of nuts and raisins
C.distilled water (H2O only)
D.salt water from the ocean
Explanation: A pure substance has fixed composition. Distilled water is essentially one compound. Ocean water, air, and trail mix are mixtures.
9How do pure substances differ from mixtures?
A.Mixtures always form new chemical formulas; pure substances never do.
B.Pure substances can be separated by filtration only; mixtures cannot.
C.Mixtures always have higher density than pure substances.
D.Pure substances have a definite composition; mixtures can vary in composition.
Explanation: Elements and compounds have fixed composition. Mixtures combine substances physically in variable amounts without a fixed overall formula.
10Which method is MOST appropriate to separate iron filings from sand?
A.Use a magnet to attract the iron filings
B.Boil the mixture until both materials evaporate
C.Add acid to dissolve the sand only
D.Filter the dry solid mixture with no other tools
Explanation: Iron is magnetic and sand is not, so a magnet separates them physically without changing either substance chemically.

About the ACAP Science Grade 8 Exam

ACAP Summative Grade 8 Science is Alabama's required spring statewide summative assessment for grade 8 students, administered by the Alabama State Department of Education on the DRC INSIGHT platform. It measures the Alabama Course of Study: Science standards, which moved to the 2023 edition for the spring 2026 administration with mixed item types and timed sessions. Practice questions on OpenExamPrep are free English-language multiple-choice study aids aligned to the official reporting categories; they do not replace authentic constructed responses, listening tasks, technology-enhanced items, or the secure official assessment. ALSDE permits Spanish-language science forms for eligible English learners until English proficiency is attained; this practice bank is English only.

Questions

66 scored questions

Time Limit

About 100 minutes total (two calculator-allowed sessions of ~50 minutes each per the ALSDE ACAP Summative Test Times and Item Counts table).

Passing Score

Results reported in four achievement levels (Level 1–Level 4). Proficient is Level 3 + Level 4 on Alabama state proficiency reporting (ALSDE ACAP Summative score reports / state data overviews).

Exam Fee

Free for eligible Alabama public school students; ACAP Summative is a required statewide assessment administered by districts at no cost to families. (ALSDE Student Assessment; delivered via DRC INSIGHT Online Learning System)

ACAP Science Grade 8 Exam Content Outline

21-23 pts

Matter and Its Interactions

Structure and properties of matter, chemical reactions (Standards 1–7).

15-17 pts

Motion and Stability: Forces and Interactions

Forces, motion, and interactions (Standards 8–12).

12-14 pts

Energy

Energy transfer and conservation (Standards 13–16).

8-10 pts

Waves and Their Applications

Waves and applications (Standards 17–19).

How to Pass the ACAP Science Grade 8 Exam

What You Need to Know

  • Passing score: Results reported in four achievement levels (Level 1–Level 4). Proficient is Level 3 + Level 4 on Alabama state proficiency reporting (ALSDE ACAP Summative score reports / state data overviews).
  • Exam length: 66 questions
  • Time limit: About 100 minutes total (two calculator-allowed sessions of ~50 minutes each per the ALSDE ACAP Summative Test Times and Item Counts table).
  • Exam fee: Free for eligible Alabama public school students; ACAP Summative is a required statewide assessment administered by districts at no cost to families.

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

ACAP Science Grade 8 Study Tips from Top Performers

1Practice with grade-level Alabama Course of Study Science skills, not generic trivia.
2Use short mixed sets weekly rather than one long cram session.
3Review official ACAP sample item types on ALSDE/DRC resources so platform tools feel familiar.
4Read every explanation—wrong-answer feedback targets common misconceptions.
5Build stamina with timed practice blocks matching a single official session length.

Frequently Asked Questions

What is the ACAP Summative Grade 8 Science assessment?

It is Alabama's required spring Science summative for grade 8, part of the Alabama Comprehensive Assessment Program (ACAP) Summative run by ALSDE on DRC INSIGHT.

Is the official test all multiple choice?

No. Official ACAP Summative uses multiple item types (including multiple-select and technology-enhanced items, and for ELA text-dependent writing). This site offers English four-option MCQ study adaptations only.

How long is the official test?

About 100 minutes total (two calculator-allowed sessions of ~50 minutes each per the ALSDE ACAP Summative Test Times and Item Counts table).

How many questions are on the official test?

The ALSDE Test Times and Item Counts table lists about 66 items for this grade/subject; the 2024 blueprint allocates 60 possible points across reporting categories.

What do scores mean?

Students receive four achievement levels (Level 1–Level 4). Alabama proficiency reporting treats Level 3 and Level 4 as proficient.

Is there a testing fee?

No family fee for eligible public school students; districts administer the required state assessment.

When is ACAP Summative given?

Once each spring. For 2025–26, ALSDE scheduled ACAP Summative Grades 2–8 for March 16–April 24, 2026, with Grades 2–3 ELA required in the first four weeks of the window.

Did the science standards change recently?

Yes. Alabama adopted the 2023 Alabama Course of Study: Science, implemented in 2025–26. ALSDE reported that spring 2026 was the first administration testing the new standards, with results based on new cut scores, so science scores are not directly comparable to earlier years.