Exam 3 Question Set 12
A negatively charged rod is brought near a metal conductor. The electrons in the metal conductor experience a force of
repulsion
A positively charged rod is brought near a metal conductor. The protons in the metal conductor experience a force of
repulsion
When a charged rod is used to charge an electroscope by induction, the electroscope obtains a charge that is
the opposite of the rod
When a charged rod is used to charge an electroscope by conduction, the electroscope obtains a charge that is
the same as the rod
A conductor differs from an insulator in that a conductor
none of these
How many protons, neutrons, and electrons are in a single neutral atom of Ni-59?
28 protons, 31 neutrons, 28 electrons
How many protons, neutrons, and electrons are in a single neutral atom of Ag-107?
47 protons, 60 neutrons, 47 electrons
How many protons, neutrons, and electrons are in a single atom of Ag-108 if it has a +2 charge?
47 protons, 61 neutrons, 45 electrons
You charge an electroscope by touching it with a negatively charged rod. What happens if you then touch the knob of the electroscope with your finger?
Electrons move from the electroscope into your finger.
What is the difference between the nucleus of a Rh-103 atom and the nucleus of a Pd-106 atom?
Pd 106 has 1 more proton and 2 more neutrons.
When nylon and amber come into contact, which material takes electrons from the other?
amber
A positively charged rod is brought near a metal conductor. The electrons in the metal conductor experience a force of
attraction
Upon entering the room, you observe two balloons suspended from the ceiling. You notice that instead of hanging straight down vertically, the balloons seems to be repelling each other. You can conclusively say ...
both balloons are charged with the same type of charge.
Which of the diagrams above best represents the charge distribution on a neutral metal sphere when a negatively charged balloon is held nearby?
c
A balloon will stick to a wooden wall if the balloon is charged
either positively or negatively
As a positively charged rod moves toward the knob of a neutral electroscope, ...
electrons in the leaves move from the leaves toward the knob
List these devices in the chronological order (oldest to newest) in which they were invented.
electroscope, Leyden jar, electrophorus
An electroscope is charged negatively having by foil leaves that stand apart. As a positive charge is brought close to the electroscope, the leaves
fall closer together
You construct a simple electrophorus out of a glass plate, an aluminum pie pan, and a styrofoam cup. You charge the glass plate by rubbing it with silk, set the pie pan on the plate, ground the pan with your finger, and then lift the pan off the glass plate. You then touch the pan with your finger and the pan
gives electrons to your finger
The picture above is a picture of a(n)
leyden jar
Charge carriers in a metal are electrons rather than protons because electrons are
loosely bound
Add electrons to an atom and the atom becomes a
negative ion
Rub a balloon with fur and the balloon becomes
negatively charged
Rub your hair with a comb and the comb becomes
negatively charged
Strip electrons from an atom and the atom becomes a
positive ion
Rub a glass rod with silk and the glass rod becomes
positively charged
