What are valence electrons ?

the number of electrons on the outermost orbital

Which particles make up the nucleus of an atom?

electrons, protons, and neutrons

How many protons, electrons and neutrons does an neutral atom of Calcium have? Its atomic number is 20 and the mass number is 40.

20 protons, 20 electrons and 20 neutrons

20 protons, 18 electrons and 40 neutrons

40 protons, 40 electrons and 20 neutrons

20 protons, 18 electrons and 20 neutrons

What is the mass number of an element?

the sum of the number of protons and the number of neutrons in the nucleus of an atom

the total number of electrons and the number of protons

What does the atomic number of an element represent?

sum of the protons and neutrons inside the nucleus

Atomic Structure- Review game

Quiz

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Science, Chemistry

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8th - 9th Grade

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Practice Problem

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Medium

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NGSS

MS-PS1-1, HS-PS1-1, HS-PS1-2

Standards-aligned

Chaille Mapes

Used 97+ times

FREE Resource

About this resource

This quiz comprehensively covers atomic structure fundamentals appropriate for 8th and 9th grade physical science students. The questions assess students' understanding of subatomic particles (protons, neutrons, and electrons), their locations within the atom, and their charges. Students must demonstrate mastery of key atomic concepts including atomic number, mass number, valence electrons, and electron energy levels. The quiz requires students to interpret atomic diagrams, calculate the number of subatomic particles in neutral atoms, and understand the relationship between atomic number and element identity. Students need to know that the nucleus contains protons and neutrons, that electrons occupy energy levels around the nucleus with specific capacities (2, 8, 8 for the first three levels), and that valence electrons are those in the outermost energy level. The problems also test understanding of how atomic number defines an element and how mass number represents the sum of protons and neutrons. Created by Chaille Mapes, a Science teacher in US who teaches grade 8-9. This review game serves multiple instructional purposes in the chemistry classroom, functioning effectively as a formative assessment tool to gauge student understanding before moving to more complex atomic concepts like chemical bonding and periodic trends. Teachers can deploy this quiz as a warm-up activity to activate prior knowledge, assign it as homework to reinforce classroom instruction, or use it as targeted practice before unit tests. The varied question formats help students build confidence with atomic structure vocabulary and calculations while identifying areas needing additional support. This assessment aligns with Next Generation Science Standards MS-PS1-1 (developing models to describe atomic composition) and supports the progression toward high school chemistry standards HS-PS1-1 (using the periodic table as a model to predict properties based on electron patterns).