Question 1
In the middle school model of matter, which description of an atom is most accurate?
Correct Answer:
The smallest particle of an element that still has that element's properties
Question 2
Which example is a molecule?
Correct Answer:
O₂, two oxygen atoms bonded together
Question 3
Which process is a chemical change?
Correct Answer:
Iron nails rusting when oxygen and water react with iron
Question 4
Which particle is negatively charged and occupies the region outside the nucleus in common middle school atom models?
Correct Answer:
Electron
Question 5
A student pushes a box across a rough floor at constant speed. Which statement about the horizontal forces is best?
Correct Answer:
The push force and friction are balanced, so net force is about zero
Question 1
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About this Exam

Prepare with the DeSSA Science Grade 8 Practice Questions - Delaware System of Student Assessments (DeSSA) Science - Grade 8 Exam practice quiz. This question bank includes 100 questions covering energy, earth, change, mass, and reaction. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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DeSSA Science Grade 8 Practice Questions - Delaware System of Student Assessments (DeSSA) Science - Grade 8 Exam

This practice set contains 100 questions from the matching question bank and focuses on energy, earth, change, mass, and reaction. 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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