WY-TOPP Science Grade 8 Practice Questions - WY-TOPP Summative Assessment - Grade 8 Science Exam - WY-TOPP Science Grade 8 Practice Questions - WY-TOPP Summative Assessment

Question 1

A student places 10 g of baking soda and 20 g of vinegar into a sealed plastic bottle on a digital balance. A chemical reaction occurs, forming carbon dioxide gas and a liquid solution. What will the digital balance read after the reaction is complete?

Less than 30 g because gas escaped Exactly 30 g because mass is conserved in a closed container More than 30 g because new gas was created 10 g because vinegar was consumed

Correct Answer:

Exactly 30 g because mass is conserved in a closed container

Question 2

Which statement best describes the particle motion and arrangement in a solid ice cube compared to liquid water?

Particles in ice move freely in all directions with high kinetic energy. Particles in ice are locked in fixed, rigid positions and vibrate in place. Particles in ice are farther apart and slide past one another easily. Particles in ice have broken apart into individual hydrogen and oxygen atoms.

Correct Answer:

Particles in ice are locked in fixed, rigid positions and vibrate in place.

Question 3

Which of the following observations provides the clearest evidence that a chemical reaction has occurred rather than a physical change?

An iron nail left outside turns reddish-brown and forms rust. An ice cube melts into a puddle of liquid water on a warm desktop. A piece of paper is shredded into small confetti strips. Table salt dissolves completely in a glass of warm water.

Correct Answer:

An iron nail left outside turns reddish-brown and forms rust.

Question 4

An atom of carbon has 6 protons, 6 neutrons, and 6 electrons. Which subatomic particles are located inside the nucleus and determine the atom's mass number?

Protons and electrons Protons and neutrons Neutrons and electrons Electrons only

Correct Answer:

Protons and neutrons

Question 5

A wooden box rests on a flat floor. Student A pushes the box to the right with a force of 10 N, while Student B pushes the box to the left with a force of 4 N. What is the net force acting on the box?

14 N to the right 6 N to the right 6 N to the left 0 N (forces are balanced)

Correct Answer:

6 N to the right

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About this Exam

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

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WY-TOPP Science Grade 8 Practice Questions - WY-TOPP Summative Assessment - Grade 8 Science Exam

This practice set contains 100 questions from the matching question bank and focuses on water, energy, text, student, and mass. 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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WY-TOPP Science Grade 8 Practice Questions - WY-TOPP Summative Assessment - Grade 8 Science Exam

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