Static Electricity Quiz

The amount of charge carried by a lightning bolt is estimated at 10 coulombs. What quantity of excess electrons is carried by the lightning bolt?

(10C)(6.25 x 10^18)/1 C = 6.25 x 10^19

Determine the quantity and type of charge on an object that has 3.62×10^12 more protons and electrons

(3.62 x 10^12)(1.6 x 10^-19)/1 proton = +5.8 x 10^-7 Coulombs

The charge on a single proton is

+1.6 x 10^-19 C

Which of the following materials are likely to exhibit more conduct the properties and insulating properties? a. Rubber b. Aluminum c. Silver d. Plastic e. Wet skin

b c e

Protons and neutrons are _______ _______ ______ within the nucleus of the atom

bound tightly together

True or False: An object that is positively charged contains all protons and no electrons

False

The charge on a single electron is

-1.6 x 10^-19 C

For electrons to make a move from the atoms of one material to the atoms of another material there must be what three things?

1. An energy source 2. A motive 3. A low-resistance pathway

One coulomb is equal to the excess of how many electrons or protons?

6.25 x 10^18

What is a ground?

A large object that serves as an almost infinite source of electrons or sink for electrons. A ground contains such vast space that it is the ideal object to either receive electrons or supply electrons to whatever object needs to get rid of them or receive them

Electric force

A noncontact force; any charged object can exert this force upon other objects will charge an uncharged objects Opposites attract and likes repel

Electrons in lower energy cells can move to the higher energy outer shells by ________ __ ________

Addition of energy

Modern quantum mechanical view of the atom

And atom is composed of a variety of subatomic particles: protons, electrons, and neutrons

Ions

Atoms with a positive or a negative electrical charge

True or False: When an object becomes polarized, it acquires a charge and becomes a charged object.

False, polarization is just distribution of charges

Electrostatic forces

Both attractive and repulsive in nature, hold the world of Adams and molecules together in perfect balance

Atoms

Indivisible building blocks of matter

True or False: An object that is negatively charged could only contain electrons with no accompanying protons

False

The number of _______ will determine whether or not an atom is electrically charged or electrically neutral

Electrons

Negatively charged particles possess more _________ than _________

Electrons; protons

Uncharged particles contains an ___________ number of electrons and protons

Equal

True or False: An object that is electrically neutral contains only neutrons

False

Each shell has a distinct energy level Outer shells: _________ energy levels, _______ in stability

Higher, lower

Well the electrons are attracted to the protons in the nucleus, the addition of energy to an atom can persuade the electrons to?

Leave an atom

Electrons within atoms of other materials can be persuaded to __________ ______ _______ ____ _______ and ________ ________ of the electron shells of other atoms of different materials

Leave their own electron shells Become members

Insulators

Materials that impede the free flow of electrons from atom to atom and molecule to molecule

Conductors

Materials that permit electrons to flow freely from particle to particle

The charge of an object is what measurable quantity?

The coulomb

Shells

Outside the Nucleus Concentric spherical regions of space Home of the negatively charged electrons

Proton is charged _________, neutron has -_____charge and they said to be ________

Positively; no; neutral

Atoms of each element are distinguished from each other by the number of ________ that are present in their nucleus

Protons

___________ and ________ are the charged parts of an atom

Protons and electrons

A positively charged particle possesses more __________ than _________

Protons; eletrons

________ and __________ are the most massive; located in the nucleus of the atom

Protons; neutrons

Electrons in a higher energy cells can we move to the lower energy shell by ________ ____ _____

Release of energy

If provided sufficient energy, and electron can be ______ from an atom and be free from its attraction to the nucleus

Removed

Atomic structure

The atom consist of a densely packed Cora positive charge known as the nucleus surrounded by negatively charged electrons An atom consist of mostly of empty space the mass was packed into the nucleus that was small compared to the actual size of the atom

Explain what must happen in order for a neutral atom to become negatively charged

The atom must gain electrons

Explain what must happen in order for a neutral atom to become positively charged

The atom must lose electrons

The Law of Conservation of Charge

The overall charge on the system of two objects is the same after the charging process as it was before the charging process. Charge is neither created nor destroyed during this charging process; it is simply transferred from one object to the other object in the form of electrons

Polarization

The process of separating opposite charges within an object Charges are not created, just transferred

True or False: Charged objects and neutral objects attract

True

True or False: Electrical forces can cause object to attract or repel each other

True

A rubber balloon possesses a positive charge. If brought near and touched to the door of a wooden cabinet, it sticks to the door. This does not occur with an uncharged balloon. These two observations can lead one to conclude that the wall is _____. a. electrically neutral b. negatively charged c. a conductor d. lacking electrons

a

Suppose that a conducting sphere is charged positively by some method. The charge is initially deposited on the left side of the sphere. Yet because the object is conductive, the charge spreads uniformly throughout the surface of the sphere. The uniform distribution of charge is explained by the fact that ____. a. the charged atoms at the location of charge move throughout the surface of the sphere b. the excess protons move from the location of charge to the rest of the sphere c. excess electrons from the rest of the sphere are attracted towards the excess protons

c

A conductor differs from an insulator in that a conductor ________. a. has an excess of protons b. has an excess of electrons c. can become charged and an insulator cannot d. has faster moving molecules e. does not have any neutrons to get in the way of electron flow f. none of these

f

What does "atomos" mean in greek?

indivisible