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Printable 4th–5th grade science unit test on atoms with questions about atom parts, nuclear fusion, and nuclear fission.
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Atoms Unit Test

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This printable science test for grades 4–5 includes five open-response questions on atomic structure and nuclear energy. Students answer questions about atom definition, atom parts, nuclear energy in the nucleus, nuclear fusion, and nuclear fission. Useful as a summative assessment after an atoms unit or for checking understanding of basic physical science concepts.

Subject:
Science
Topic:
Physics
Grade Level:
4th – 5th Grades
Updated March 2026

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