Explanation: When you rub the balloon with the sweater, you give the balloon a negative charge. The pepper is attracted to the balloon because the electrons in the pepper move to the side of the pepper that opposite the balloon. The side near the balloon develops a negative charge, and the positive is attracted to the negative charge of the balloon. The electrons in the salt don't move, so they stay where they are, without a charge. This is a good example of static electricity.
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