The World of Molecules
Donatello, Therese Weber High School
Gupta, Harendra Hyde Park High School
Mayfield, Mattie Chalmers Elementary School
Robinson, Veronices Beasley Academic Center
1) Students will learn basic facts about the formation of molecules.
2) Students will perform phenomological activities related to ionic and covalent
Equipment and Materials
magnets different colors of construction paper
iron filings comb
salt notebook paper
plastic pieces string
1) Preparation of materials
Mix salt, pepper and iron filings. Cut a piece of notebook paper into 1cm
squares. Cut simulated molecules into puzzle-like shapes using different colors of
construction paper. Cut two (2) plastic pieces the same size, then cut one piece into
three equal parts. Place atom symbols and oxidation numbers on construction paper.
Attach string to construction paper to hang on each person.
Use bar magnets to show attraction and repulsion. Use magnet to separate iron
filings from salt and pepper. Rub comb on piece of wool and place near 1cm pieces of
paper. Place a large piece of plastic on one side of the balance and the three (3)
pieces of plastic on the other side. Give each student a piece of construction paper
with the chemical symbols and oxidation numbers. Then have them form molecules with
other students. Record information on worksheet and discuss results.
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