1. Infer Why did you rub the b
Ans:When you rub a balloon against your sweater, balloon will transfer electron from the sweater, which leaves the sweater positively charge and the balloon negatively charged. If you simply touched the balloon to your sweater instead of rubbing it, there are not charged transfer, because there are no friction occur.
2. Key Concept Why do you think the balloon i
nteracted the way it did with your sweater and with the stre am of water?
Ans Because charge is not equal; therefore, it need to make contact to balance itself. (equivalent)