Rub the yellow balloon on the sweater until you get all of the blue negative charges on the balloon. When you rub two things together and there is a transfer of negative charge, this charge distribution is called friction. Now, drag the balloon in between the wall and the sweater. Then release the balloon to see what happens. Explain what happened and why.
Type Answer HERE:
When the yellow balloon is rubbed on the sweater, it gains an excess of negative charges. This happens because the friction between the two surfaces causes the transfer of electrons from the sweater to the balloon, leaving the balloon with a net negative charge.
When the charged balloon is dragged in between the wall and the sweater, the opposite charges of the wall and the balloon attract each other. The wall is made of atoms with positive charges in their nuclei, and the negatively charged balloon is attracted to these positive charges. This attraction causes the balloon to stick to the wall momentarily.
However, once the balloon is released, the negative charges on the balloon repel each other, causing the balloon to move away from the wall. This happens because like charges repel each other, and the negative charges on the balloon are trying to spread out and minimize their repulsion.
In summary, the charged balloon sticks to the wall due to the attraction between the opposite charges on the balloon and the wall. However, once released, the balloon moves away from the wall because the repulsive forces between the negative charges on the balloon overcome the attractive forces between the balloon and the wall.