KSA Science Grade 7 Practice Questions - Kentucky Summative Assessment Science - Grade 7 Exam - KSA Science Grade 7 Practice Questions - Kentucky Summative Assessment Science

Question 1

Which statement best describes the fundamental structure of an atom?

A nucleus of protons and neutrons surrounded by electrons in motion A solid sphere composed entirely of positively charged electrons An outer shell of neutrons surrounding a nucleus of protons and electrons A mix of liquid water and dissolved mineral ions

Correct Answer:

A nucleus of protons and neutrons surrounded by electrons in motion

Question 2

What happens to the molecules of liquid water when thermal energy is added to heat it to its boiling point?

The molecules slow down and pack more tightly together The molecules gain kinetic energy, move faster, and spread further apart The molecules break apart into hydrogen and oxygen gas atoms permanently The mass of each individual water molecule increases significantly

Correct Answer:

The molecules gain kinetic energy, move faster, and spread further apart

Question 3

Which observation provides the best evidence that a chemical reaction has taken place when two substances are mixed?

The mixture changes shape when poured into a container A solid dissolves completely in liquid water An unexpected color change occurs and gas bubbles form The mixture splits into two separate layers due to gravity

Correct Answer:

An unexpected color change occurs and gas bubbles form

Question 4

According to the law of conservation of mass, what happens to the total mass of reactants during a chemical reaction in a sealed, closed container?

Total mass increases because new atoms are created Total mass remains exactly the same before and after the reaction Total mass decreases because mass is destroyed when heat is released Total mass fluctuates depending on the speed of the chemical reaction

Correct Answer:

Total mass remains exactly the same before and after the reaction

Question 5

Which material is classified as a synthetic material manufactured from natural resources through chemical processing?

Nylon fabric produced from petroleum chemicals Raw wooden timber cut directly from forest trees Unrefined granite rock mined from a quarry Natural wool sheared from sheep

Correct Answer:

Nylon fabric produced from petroleum chemicals

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About this Exam

Prepare with the KSA Science Grade 7 Practice Questions - Kentucky Summative Assessment Science - Grade 7 Exam practice quiz. This question bank includes 100 questions covering energy, chemical, water, reaction, and plant. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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KSA Science Grade 7 Practice Questions - Kentucky Summative Assessment Science - Grade 7 Exam

This practice set contains 100 questions from the matching question bank and focuses on energy, chemical, water, reaction, and plant. 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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KSA Science Grade 7 Practice Questions - Kentucky Summative Assessment Science - Grade 7 Exam

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