Question

A student rubs a balloon made of rubber on his hair and notices that the balloon sticks to his hair afterwards. What happened to the electrical charges of both the student’s hair and the balloon?(1 point) Responses The balloon’s charge became positive, and the hair’s charge became positive The balloon’s charge became positive, and the hair’s charge became positive The balloon’s charge became negative, and the hair’s charge became negative The balloon’s charge became negative, and the hair’s charge became negative The balloon’s charge became negative, and the hair’s charge became positive The balloon’s charge became negative, and the hair’s charge became positive The balloon’s charge became neutral, and the hair’s charge became positive

Answer 1

When the student rubs the balloon on his hair, electrons are transferred from the hair to the balloon. This process gives the balloon a negative charge (because it gains electrons) and leaves the hair with a positive charge (because it loses electrons). Therefore, the correct response is:

The balloon’s charge became negative, and the hair’s charge became positive.