Subatomic Particles and Isotopes

Unit 2: Unit 2: Matter, Atoms, and the Periodic Table
Lesson 5 of 11

Objective: Students will be able to determine the number of protons, neutrons, and electrons in an atom, explain what an isotopes is, and calculate average mass.

Big Idea: Atoms are composed of subatomic particles; the number of these particles determines an atom's identity and mass.

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