MSA Grade 8 Science Practice Questions - Montana Science Assessment - Grade 8 Exam - MSA Grade 8 Science Practice Questions - Montana Science Assessment

Question 1

A student examines pure samples of carbon, sulfur, and copper. Which statement best applies the particle model of matter to all three samples?

Each sample is a mixture of many unrelated substances Each sample is made of only one type of atom arranged in a definite structure Each sample is a living cell that can carry out respiration Each sample is a form of energy that has no measurable mass

Correct Answer:

Each sample is made of only one type of atom arranged in a definite structure

Question 2

A student observes four changes. Which observation is evidence of a chemical reaction rather than only a physical change?

An ice cube melts into a puddle of liquid water on a counter A piece of chalk is crushed into a fine powder Vinegar is added to baking soda and bubbles of a new gas form while the mixture cools slightly Sand and iron filings are stirred together but can still be separated with a magnet

Correct Answer:

Vinegar is added to baking soda and bubbles of a new gas form while the mixture cools slightly

Question 3

Two sealed, identical balloons hold the same gas. Balloon A is placed in warm water and Balloon B in cold water. Which statement best compares the gas particles using kinetic theory?

Particles in Balloon A have lost all their mass compared with Balloon B Particles in Balloon A move faster on average than particles in Balloon B Particles in Balloon A stop moving because the warm water holds them still Particles in Balloon A turn into a different element because of the temperature

Correct Answer:

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

Question 4

A student seals 20 g of baking soda and 30 g of vinegar in a zip-top bag. After the reaction, the bag feels cool and the contents have a mass of 50 g. Which claim is best supported by these data?

Mass was created during the reaction because a gas appeared Mass was destroyed because the bag felt cool Mass was conserved because the system was closed and the total mass stayed the same Mass was converted completely into energy, leaving no matter behind

Correct Answer:

Mass was conserved because the system was closed and the total mass stayed the same

Question 5

A company advertises a new plastic made by chemically bonding long chains of small repeating molecules. Which statement best explains why this material is considered a synthetic material?

It forms naturally in living organisms without human processing It is designed by combining components through a chemical process that humans control It is a pure element found on the periodic table It is a physical mixture that can be separated with a magnet

Correct Answer:

It is designed by combining components through a chemical process that humans control

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About this Exam

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

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MSA Grade 8 Science Practice Questions - Montana Science Assessment - Grade 8 Exam

This practice set contains 100 questions from the matching question bank and focuses on student, water, cell, population, and energy. 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.

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MSA Grade 8 Science Practice Questions - Montana Science Assessment - Grade 8 Exam

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