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A balloon may stick to an easel if it has been charged with static electricity. Material objects are made of atoms which contain an equal amount of protons (positive) and electrons(negative), meaning that they are normally electrically neutral. If two materials come into contact, though, electrons may move from one object to the other, thus leaving a surplus of positive charge on one object and a negative charge of the same amount on the other. This charge imbalance is retained when the materials separate.

Protons and electrons are opposite charges and attract each other (and same charges repel). So if you rub a blown-up balloon on your jumper and put it up against an easel, it will stick because you have given it more electrons (negative charge) than the positively charged easel.

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12y ago

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