Deck 1: The Electron Theory of Electricity

Question 1

Neils Bohr's model of the atom consists of a nucleus of

A) electrons, orbited by neutrons and protons.
B) electrons and neutrons, orbited by protons.
C) protons and neutrons, orbited by electrons.
D) protons and electrons, orbited by neutrons.
E) 0

Answer 1

0

Question 2

Matter composed entirely of the same type of atom is called

A) an element.
B) a compound.
C) a conductor.
D) an insulator.

Answer 2

an element.

Question 3

Matter composed of different types of atom is called

A) an element.
B) a compound.
C) a conductor.
D) an insulator.

Answer 3

a compound.

Question 4

Hydrogen is an example of

A) an element.
B) a compound.
C) a conductor.
D) an insulator.

Question 5

Carbon monoxide is an example of

A) an element.
B) a compound.
C) a conductor.
D) an insulator.

Question 6

An atom's positively-charged sub-particles are called

A) neutrons.
B) protons.
C) electrons.
D) quanta.

Question 7

An atom's negatively-charged sub-particles are called

A) neutrons.
B) protons.
C) electrons.
D) quanta.

Question 8

An atomic sub-particle that carries no electrical charge is called a

A) proton.
B) neutron.
C) quantum.

Question 9

An universal law that applies to electrical charges states that

A) like charges attract.
B) unlike charges attract.
C) like charges neutralise.
D) unlike charges neutralise.

Question 10

The outermost shell of an atom is called its

A) k' shell.
B) l' shell.
C) m' shell.
D) valence shell'.

Question 11

The chemical and electrical properties of an atom is determined by its

A) k' shell.
B) l' shell.
C) m' shell.
D) valence shell'.

Question 12

A 'positive ion' is an atom with

A) more electrons than protons.
B) more protons than neutrons.
C) more protons than electrons.
D) more electrons than neutrons.

Question 13

A 'positive ion' will tend to attract

A) protons.
B) electrons.
C) neutrons.
D) other atoms.

Question 14

A 'free electron' is an electron released from an atom's

A) k' shell.
B) l' shell.
C) m' shell.
D) valence' shell

Question 15

If the outer shell of an atom is less than half full, it will tend to

A) attract free electrons.
B) lose electrons.
C) be electrically negative.
D) be electrically positive.

Question 16

If the outer shell of an atom is more than half full, it will tend to

A) attract free electrons.
B) lose electrons.
C) be electrically negative.
D) be electrically positive.

Question 17

In metals, an electric current is

A) a rapid drift of electrons from negative to positive.
B) a rapid drift of electrons from positive to negative.
C) an extremely-slow drift of electrons from negative to positive.
D) an extremely-slow drift of electrons from positive to negative.

Question 18

A general definition of electric current is

A) a drift of free electrons in a conductor.
B) a drift of electric charges in a conductor.
C) a drift of electrons from positive to negative.
D) a drift of ions from positive to negative.

Question 19

Silver, copper,and aluminium are examples of practical

A) semiconductors.
B) conductors.
C) insulators.
D) compounds.

Question 20

Ceramics, glass, and plastics are examples of practical

A) semiconductors.
B) conductors.
C) insulators.
D) compounds.

Question 21

An electrical conductor is normally electrically

A) positive.
B) negative.
C) positive or negative.
D) neutral.

Question 22

A 'displacement current' is

A) a flow of electrons within an insulator.
B) a flow of charges within an insulator.
C) a distortion of the electron orbits within an insulator.
D) another term for 'leakage current'.

Question 23

Conventional current' is

A) a flow of positive charges in a conductor.
B) a flow of ions in a liquid conductor.
C) the result of an error by an early scientist.
D) no longer used these days.