7. If you rub a glass rod with a piece of silk, the rod becomes positively
CAN
ROD
WOOD
charged. This means that
A. glass attracts more protons
B. protons have moved to the rod
C. friction destroyed electrons in the rod
D. the silk has become negatively charged
8. A negatively charged rod is brought hear a metal can that rests on a
wooden stand. You touch the
opposite side of the can
momentarily with your finger. If
you remove your finger before
removing the rod, what will
happen to the charge of the can?
A. be discharged
C. become positively charged
B. remain as it was
D. become negatively charged
9. A type of charging process where an object can be charged without
actual contact to any other object.
A. Charging by induction C. Charging by friction
B. Charging by reduction D. Charging by conduction
10. A charged iron rod is brought near a metal ball that is inounted on a
rubber sheet if the metal
ball acquired a negative
charge after it was grounded
Rubber Sheet
momentarily, what must be
Ground
the charged of the iron rod?
A Negative B. Neutral Positive D. Uncertain
11.If an element has 6 protons, 7 neutrons, and 6 electrons, what is the
charge of the element?
A. Negative
C. Positive
B. Neutral
D. Uncertain
12. If a substance as a higher number of electrons than protons on its
surface, what type of charge does it have?
A. Negative charge
C. Positive charge
B. Neutral charge
D. No charge at all​