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