CT NGSS Science Grade 8 Practice Questions - Connecticut NGSS Science Assessment - Grade 8 Exam - CT NGSS Science Grade 8 Practice Questions - Connecticut NGSS Science Assessment

Question 1

A student compares samples of aluminum, copper, and gold. Which statement best describes these pure samples?

Each sample is a mixture of many unrelated elements Each sample is made of only one type of atom Each sample is a living cell with organelles Each sample is a form of energy with no mass

Correct Answer:

Each sample is made of only one type of atom

Question 2

Which change is a chemical reaction rather than a physical change?

Ice melting into liquid water at room temperature Crushing a limestone rock into powder Baking soda and vinegar producing carbon dioxide gas and a salt solution Mixing sand and iron filings that can still be separated

Correct Answer:

Baking soda and vinegar producing carbon dioxide gas and a salt solution

Question 3

Two sealed jars contain the same gas. Jar A is warmer than Jar B. Which comparison is most consistent with the particle model of matter?

Particles in Jar A have zero mass compared with Jar B Particles in Jar A move faster on average than particles in Jar B Particles in Jar A stop moving completely when heated Particles in Jar A become a different element only because of temperature

Correct Answer:

Particles in Jar A move faster on average than particles in Jar B

Question 4

A sealed reaction chamber holds 12.0 g of reactants before a reaction. After the reaction, the chamber still contains only products of that reaction. What total mass of products is expected if no mass leaves or enters?

0.0 g because mass is destroyed in reactions 12.0 g 24.0 g because reactions always double mass 6.0 g because half the mass becomes energy waves

Correct Answer:

12.0 g

Question 5

Which property is most useful for identifying a pure substance when samples have different shapes and sizes?

Total mass alone, which always identifies the substance uniquely Density, which does not depend on the sample's overall shape Volume alone, which is the same for every substance Color alone, which never varies for any material

Correct Answer:

Density, which does not depend on the sample's overall shape

Exam overview

About this Exam

Prepare with the CT NGSS Science Grade 8 Practice Questions - Connecticut NGSS Science Assessment - Grade 8 Exam practice quiz. This question bank includes 100 questions covering mass, energy, student, reaction, and water. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

More details

Additional Information

CT NGSS Science Grade 8 Practice Questions - Connecticut NGSS Science Assessment - Grade 8 Exam

This practice set contains 100 questions from the matching question bank and focuses on mass, energy, student, reaction, and water. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

Quiz information

Frequently Asked Questions

The complete question count is available after full access is unlocked.

No fixed duration is currently configured for this quiz.

Question explanations are included where they are available in the quiz content, helping you review the reasoning after answering.

Yes. You can retake the practice test again as you continue studying during your available access period.

After your access is confirmed, you can continue into the complete practice exam from this quiz flow.

Unless explicitly stated otherwise, this page provides independent practice material for study and exam preparation and is not the official examination itself.

Correct Answer:

Correct Answer:

Correct Answer:

Correct Answer:

Correct Answer:

About this Exam

Additional Information

CT NGSS Science Grade 8 Practice Questions - Connecticut NGSS Science Assessment - Grade 8 Exam

Frequently Asked Questions

Related Questions

Aquatic Pest Management & Aquatic Science Practice Exam

Archer Baseline Assessment Practice Test

Archer Readiness Assessment Practice Exam

4th Grade Terranova Practice Test

Arizona Educator Proficiency Assessments Practice Exam

600A Tech Assessment Practice Exam