Elements Lesson: Atomic Number, Symbols & Element Tiles, Grades 6-8

How many kinds of atoms are there? Students guess, then learn that 118 elements are known and that one number tells them apart: the atomic number, which is the number of protons in every atom of an element. Change the protons and you have a different element.

What's inside

• 16 slides, with speaker notes on all 16
• Lesson plan, 2 pages
• Student worksheet, 2 pages
• Answer key, 1 page

Answer key included

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