3.1 Electron Theory

Question 1

how is a proton charged?

Answer 1

positively

Question 2

Charge of a neutron?

Answer 2

Neutrally charged

Question 3

Charge of electron

Answer 3

positive

Question 4

What does the nucleus contain?

Answer 4

Proton and neutrons

Question 5

Electricity is defined as?

Answer 5

Flow of electron between atoms

Question 6

A material that can easily conduct electricity is know as?

Answer 6

conductor

Question 7

material that doesnt conduct electricity easily?

Answer 7

insulator

Question 8

3rd material that ranges between conductor and insulator

Answer 8

semi conductor

Question 9

What are the component parts of an atom and what is their charge?

Answer 9

proton - positive, neutron neutral, electron - negative

Question 10

What is the outermost shell of an atom referred to?

Answer 10

valence shell

Question 11

Electrons with least amount of energy are in which shell?

Answer 11

closest to the nucleus

Question 12

electrons with the greatest amount of energy are in the shell?

Answer 12

furthest from the nucleus

Question 13

Describe a loosely bound electron

Answer 13

They live in the outermost shell and have the least attraction held by the nucleus

Question 14

Name the shells from closest to furthest

Answer 14

KLMN

Question 15

How many electrons are in the K shell

Answer 15

2

Question 16

electrons in L shell?

Answer 16

8

Question 17

electrons in M shell

Answer 17

18

Question 18

electrons in N shell?

Answer 18

32

Question 19

the valance band determines?

Answer 19

whether an electron will flow easily

Question 20

a balanced atom has an equal number of?

Answer 20

protons and electrons

Question 21

How is a positive Ion created?

Answer 21

By losing an electron. (more positive prontons than electrons that are negative)

Question 22

How is a negative ion created?

Answer 22

By gaining an electron (More electrons -positive than protons - negative)

Question 23

What is a molecule?

Answer 23

2 or more atoms bonded together

Question 24

Describe an electrolyte

Answer 24

Any liquid or gel which contains ions

Question 25

What makes a good conductor?

Answer 25

1 electron in the valence shell very loosely bound to the atom, many free electrons that when moving make up the electric current

Question 26

How many electrons in a conductor outershell?

Answer 26

1-3

Question 27

What is the atomic number?

Answer 27

The amount of protons in the nucleus of an atom

Question 28

What differentiates an insulator from a conductor?

Answer 28

An insulator has many more electrons (5-8) in the outer shell which are very tightly bound to the nucleus making it more difficult for electron flow between them.

Question 29

How many electrons are in a semi conductors valence shell?

Answer 29

4

Question 30

How is a semiconductor made more conductive?

Answer 30

Doping (Adding impurities) or Temperature