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100+ Free New Jersey NJSLA Science Grade 8 Practice Questions

Prepare for the New Jersey Student Learning Assessments — Science Grade 8 exam with instant access — no signup required.

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Key Facts: New Jersey NJSLA Science Grade 8 Exam

NJDOE

State Agency

New Jersey Department of Education, Office of Assessments

Cambium Assessment, Inc.

Test Provider

NJDOE, NJSLA Science FAQ

180 min (4 units)

Science Time

NJSLA-Science Units Testing Times

Fixed-form (not adaptive)

Format

NJDOE, NJSLA Science FAQ

English only

Language

NJDOE, NJSLA Science FAQ

100 practice questions

Practice Bank Size

OpenExamPrep

Prepare for the NJSLA Science Grade 8 test with 100 practice questions covering matter, forces, energy, waves, life science, and Earth science, with detailed explanations.

Sample New Jersey NJSLA Science Grade 8 Practice Questions

Try these sample questions to test your New Jersey NJSLA 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.

1A student draws a model of water (H2O) as two hydrogen atoms bonded to one oxygen atom. Which feature must the model show to correctly represent that water is a compound and not a mixture?
A.The hydrogen and oxygen atoms are chemically bonded in a fixed ratio.
B.The hydrogen and oxygen atoms are physically mixed but can be separated by filtering.
C.The atoms are clustered together but each keeps its original properties.
D.The oxygen atom is larger than the two hydrogen atoms so they stick to it.
Explanation: A compound is made of atoms of different elements chemically bonded in a fixed ratio. In water the ratio is always two hydrogen to one oxygen, and the atoms lose the properties of the separate gases.
2Which property is most useful for identifying a pure substance regardless of how big the sample is?
A.Boiling point
B.Mass
C.Volume
D.Total number of atoms
Explanation: Boiling point is an intensive property; it is the same for a pure substance no matter the sample size. Mass, volume, and total atoms depend on how much of the substance is present.
3A company makes a synthetic plastic that is stronger and lighter than natural rubber. Which statement best compares the synthetic plastic to the natural rubber?
A.Both are made of atoms that combine to form molecules with different properties.
B.Synthetic materials are always better for the environment than natural materials.
C.Natural rubber has atoms but synthetic plastic is made of chemicals, not atoms.
D.Synthetic materials cannot be recycled because they are artificial.
Explanation: All matter, whether natural or synthetic, is made of atoms that combine to form molecules. The different arrangement and bonding of atoms gives natural rubber and synthetic plastic different properties.
4A sealed balloon is placed in a freezer. What happens to the motion of the gas particles inside the balloon as it cools?
A.The particles slow down because they have less thermal energy.
B.The particles stop moving completely.
C.The particles speed up because cold makes them move more.
D.The particles move faster to generate heat.
Explanation: Temperature measures the average kinetic energy of particles. Cooling removes thermal energy, so the gas particles move more slowly on average.
5A metal spoon and a wooden spoon sit in a pot of hot soup. After a minute, the metal spoon is too hot to hold but the wooden spoon is still cool. Which explanation is correct?
A.Metal transfers thermal energy more quickly than wood because it is a better conductor.
B.Metal absorbs more total heat than wood because it is heavier.
C.Wood does not allow any heat to enter it because it is an insulator.
D.Metal creates heat when it touches hot liquids.
Explanation: Metals are good thermal conductors, so heat moves quickly through the metal spoon to the handle. Wood is a poor conductor (an insulator), so heat moves through it slowly.
6A student burns 10 g of wood in a sealed container. After the fire goes out, the container and all the ash, smoke, and gases inside it together have a mass of exactly 10 g. What is the best conclusion?
A.Mass was conserved because the container was sealed and no matter entered or left.
B.Mass was not conserved because the wood changed form.
C.The wood was destroyed and its mass disappeared.
D.Mass was created because smoke and ash appeared.
Explanation: In a closed system, the total mass stays the same before and after a chemical reaction. Burning is a chemical reaction that rearranges atoms into ash, smoke, and gases, but no mass is created or destroyed.
7A student wants to design a hand warmer that releases thermal energy when activated. Which design choice would best help the device release heat?
A.Use a chemical reaction that is exothermic, such as iron powder reacting with oxygen.
B.Use a material that is a good thermal insulator, like foam, around the reaction.
C.Use a reaction that absorbs energy from the surroundings.
D.Store the chemicals in a metal container that reflects heat back inward.
Explanation: An exothermic reaction releases thermal energy into the surroundings, which is exactly what a hand warmer needs. Iron powder reacting with oxygen (rusting) releases heat and is used in commercial hand warmers.
8A pot of water is heated on a stove. Which statement best describes what happens at the particle level as the water temperature rises?
A.The water molecules move faster on average because their kinetic energy increases.
B.The water molecules get larger as they heat up.
C.The water molecules change into a different kind of molecule.
D.The molecules stop moving and only vibrate in place.
Explanation: Heating adds thermal energy, which increases the average kinetic energy of the water molecules. They move faster, but the molecules themselves do not change size or identity.
9A student has two white powders. One is table sugar and one is table salt. Which test would best help distinguish them?
A.Compare how each powder dissolves in water and whether the resulting solution conducts electricity.
B.Measure the mass of equal-size piles of each powder.
C.Look at the color of each powder under bright light.
D.Put each powder in the sun and see which melts faster.
Explanation: Salt dissolves in water to form ions, so the solution conducts electricity; sugar dissolves as molecules and the solution does not conduct. This difference in a property identifies the substances.
10A student models the reaction 2 H2 + O2 -> 2 H2O using balls for atoms: 4 small balls for hydrogen and 2 large balls for oxygen on the reactant side. How many balls should be on the product side, and what does this show?
A.6 balls (4 small + 2 large), showing atoms are rearranged but not created or destroyed.
B.2 balls, because the molecules combined into fewer molecules.
C.4 balls, because water has 2 hydrogen and 1 oxygen and the model only tracks one molecule.
D.8 balls, because energy is released so extra atoms appear.
Explanation: The number of atoms is conserved in a chemical reaction. Two water molecules contain 4 hydrogen atoms and 2 oxygen atoms total, so the product side has 6 balls. Atoms are rearranged, not created or destroyed.

About the New Jersey NJSLA Science Grade 8 Exam

The New Jersey Student Learning Assessments — Science (NJSLA-S) Grade 8 assessment measures proficiency on the 2014 New Jersey Student Learning Standards for Science (three-dimensional: Disciplinary Core Ideas, Science and Engineering Practices, and Crosscutting Concepts). It covers matter and interactions, forces, energy, waves, organisms and ecosystems, heredity and evolution, Earth's place and systems, Earth and human activity, and engineering design. It is administered online through the New Jersey Assessments Portal (Cambium Assessment, Inc.) each spring in four 45-minute fixed-form units, in English only. This 100-question practice bank uses four-option MCQs as an English-language study adaptation.

Assessment

Four 45-minute fixed-form units (180 minutes total) with selected-response, multi-select, technology-enhanced items, and phenomena-based item clusters aligned to the three-dimensional NJSLS-Science (DCI, SEP, CCC). Delivered online through the New Jersey Assessments Portal (Cambium Assessment, Inc.). A scientific calculator is embedded. This local bank contains 100 English four-option practice MCQs.

Time Limit

Science 180 minutes (four 45-minute units)

Passing Score

No pass/fail mark. Four performance levels are reported (Level 1 through Level 4).

Exam Fee

No fee to students (New Jersey Department of Education (NJDOE))

New Jersey NJSLA Science Grade 8 Exam Content Outline

NJSLS-Science MS-PS1

Matter and Its Interactions

Molecules, states, thermal energy transfer, and chemical reactions.

NJSLS-Science MS-PS2 and MS-PS3

Forces and Energy

Newton's laws, gravitational forces, kinetic energy, and thermal transfer.

NJSLS-Science MS-PS4

Waves

Wave models, reflection/absorption/transmission, and digital/analog signals.

NJSLS-Science MS-LS1 and MS-LS2

Organisms and Ecosystems

Cells, photosynthesis, matter/energy cycling, and population resource effects.

NJSLS-Science MS-LS3 and MS-LS4

Heredity and Evolution

Genetic variation, inheritance, and natural selection.

NJSLS-Science MS-ESS1 and MS-ESS2

Earth's Place and Systems

Gravity in the solar system, water/materials cycling, plate tectonics.

NJSLS-Science MS-ESS3 and MS-ETS1

Earth and Human Activity / Engineering

Natural hazards, human impact, climate, and engineering design.

How to Pass the New Jersey NJSLA Science Grade 8 Exam

What You Need to Know

  • Passing score: No pass/fail mark. Four performance levels are reported (Level 1 through Level 4).
  • Assessment: Four 45-minute fixed-form units (180 minutes total) with selected-response, multi-select, technology-enhanced items, and phenomena-based item clusters aligned to the three-dimensional NJSLS-Science (DCI, SEP, CCC). Delivered online through the New Jersey Assessments Portal (Cambium Assessment, Inc.). A scientific calculator is embedded. This local bank contains 100 English four-option practice MCQs.
  • Time limit: Science 180 minutes (four 45-minute units)
  • Exam fee: No fee to students

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

New Jersey NJSLA Science Grade 8 Study Tips from Top Performers

1Pair a force with the reaction force it produces to keep Newton's Third Law straight.
2Trace energy from the Sun through producers to consumers when answering ecosystem questions.
3Distinguish a gene (a segment of DNA) from a trait (the expressed characteristic).
4Connect a landform to the plate boundary that created it before answering Earth-surface questions.
5In an engineering item, name the criterion (what it must do) and the constraint (what limits it).

Frequently Asked Questions

What is the NJSLA Science Grade 8 test?

It is the New Jersey Student Learning Assessments — Science assessment for Grade 8, administered online through the New Jersey Assessments Portal (Cambium Assessment, Inc.) each spring in four 45-minute fixed-form units (180 minutes total) with selected-response, multi-select, technology-enhanced items, and phenomena-based item clusters.

Is the NJSLA Science test adaptive?

No. NJSLA Science is a fixed-form (non-adaptive) assessment. Only the NJSLA-Adaptive ELA and Mathematics assessments are computer-adaptive.

Is a calculator allowed on the NJSLA Science Grade 8 test?

Yes. Students have access to a scientific calculator embedded in the testing platform.

What standards does the NJSLA Science Grade 8 test cover?

It covers the 2014 New Jersey Student Learning Standards for Science, organized three-dimensionally across Disciplinary Core Ideas (Matter, Forces, Energy, Waves, Organisms/Ecosystems, Heredity/Evolution, Earth's Systems, Earth and Human Activity), Science and Engineering Practices, and Crosscutting Concepts.

Is this practice bank affiliated with NJDOE?

No. This is an independent study resource aligned to the public NJSLS-Science. It uses four-option MCQs as a study adaptation; it is not an official NJSLA-Science product or phenomena-cluster format simulation.