Use this unique device to make your own magnetic visuals to show chemical structures. Printed in two colors (blue and red) on flexible vinyl-coated magnetic sheets, durable (1.32" thick) yet easily cut with scissors, units adhere to magnetic boards and magnetic dry-erase systems. Positive ions have one ¿gpoint¿h per charge, while negative ions have one ¿ggroove¿h per charge. Proper fit is achieved only by having the correct number of + and . ions. Includes booklet with reproducible ion fit sheets. Use to make overhead transparencies for your lectures or ion fit sheets for each student.
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