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Worksheet
Curated OER

Periodic Table Assignment

For Students 9th - 12th
In this periodic table worksheet, students complete a crossword puzzle given 22 clues about elements in the periodic table, periodic law, properties of elements and atomic mass and number. Students also fill in a periodic table to...
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Lesson Plan
Curated OER

Understanding Oxidation Numbers

For Teachers 9th - 12th
Students review atomic numbers, positive and negative charges, and the periodic table. They examine the relationships among protons and electrons, location of various elements, electron energy levels, and oxidation numbers.