Object Y carries a net negative charge after being rubbed by fur. Cassie holds onto one end of object Y and brings the other end
of object Y near some scraps of paper, which become attracted to it. Cassie is electrically grounded. Which of the following statements is true?
A.
Object Y gained protons from the fur.
B.
Object Y is a conductor.
C.
Object Y is an insulator.
D.
Object Y gained protons from the paper.
<span>You need to consider the valences of the two elements. Potassium is +1; nitrogen is -3. To balance the molecule, you need 3 potassium to one nitrogen, or K3N</span>
