AtomsThree particles, where each sits, and what each one decides.7th GradeAn atom is the smallest piece of an element that is still that element.ParticleChargeWhereDecidesProtonpositivenucleuswhich element it isNeutronnonenucleusthe isotopeElectronnegativeshells outsidehow it reactsAtomic number = protons. Mass number = protons + neutrons. Changethe protons and it is a different element.Atomswww.littleactivity.com

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Science · 7th Grade

Atoms

Three particles, where each sits, and what each one decides.

How to use it

Draw a simple atom for the first ten elements. The pattern is immediate.

Free · print-ready PDF · US Letter and A4

Grade
7th Grade
Ages
12–13
Subject
Science
Pages
1

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