Test 4

Question 1

Who was the first to frame an atomic model based on experimental evidence instead of philosophy?

Answer 1

John Dalton

Question 2

The number of protons in the nucleus is called what and what is its symbol

Answer 2

Atomic number

Z

Question 3

What makes up the nucleus and contains almost all of the mass of the atom

Answer 3

Neutrons and protons

Question 4

How does an electron behave

Answer 4

Like both a wave or particle

Question 5

What does Heisenberg’s uncertainty principle state?

Answer 5

It is impossible to know both the energy or momentum and the exact position of an electron at the same time

Question 6

Small positive integers that represent the sub level where electrons have a greater probability of being found is known as what?

Answer 6

Azimuthal quantum numbers

Question 7

What are the four letters that represent the sub levels where electrons are more likely to be found

Answer 7

Spdf

Question 8

S goes with which I value?

Answer 8

0

Question 9

P goes with which I value?

Answer 9

1

Question 10

D goes with which I value?

Answer 10

2

Question 11

F goes with which I value?

Answer 11

3

Question 12

Which Energy level has one S sub level

Answer 12

All of them

Question 13

What is the maximum number of electrons the P sub level can hold

Answer 13

6

Question 14

What is the maximum number of electrons the D level can hold

Answer 14

10

Question 15

What is the maximum number of electrons the F level can hold

Answer 15

14

Question 16

In_atoms, the number of electrons and protons are exactly equal

Answer 16

Neutral

Question 17

What states that as electrons fill up a sub level, all orbitals receive one electron with the same spin before they begin to pair up

Answer 17

Hund’s rule

Question 18

Atoms with the same number of protons but different number of neutrons are known as

Answer 18

Isotopes

Question 19

A whole number that is equal to the sum of the protons and neutrons in an atom

__=P+N

Answer 19

Mass number (A)

Question 20

What is an average that gives more importance to certain values than to others

Answer 20

Weighted average

Also how we determine atomic mass

Question 21

The electrons in the outer most energy level which are most likely to be involved in chemical bonding and give elements many of their physical properties

Answer 21

Valence electrons

Question 22

Describe electron dot notation

Answer 22

Dots that represent valence electrons and are placed around the element symbol

Question 23

If an atom loses an electron, it will have a net positive charge because there will be one less negative charge compared to the positive nuclear charges of the protons

What is it called

Answer 23

Cation

Question 24

If a neutral atom gains an electron, it will have a net negative charge when compared to the positive nuclear charge of the proton

What is it called

Answer 24

Anion

Question 25

A particle with a negative charge

Answer 25

Electron

Question 26

A particle in an atom’s nucleus with a positive charge

Answer 26

Proton

Question 27

A four dimensional region of space around the nucleus in which as many as two electrons are likely to be found. They make up sub levels

Answer 27

Orbital

Question 28

A neutral particle in an atoms nucleus

Answer 28

Neutron

Question 29

The dense central part of an atom made up of protons and neutrons. It makes up most of the atoms mass but only a small portion of its volume

Answer 29

Nucleus

Question 30

Can we identify an atom by the number of protons

Answer 30

Yes

Question 31

How many electrons does the S sub level hold

Answer 31

Two

Question 32

Aubau principle

Answer 32

States that the arrangement of electrons in an atom is determined by adding electrons to an atom with a lower atomic number, that is, one with fewer electrons

Question 33

Is based on the element symbol and includes the atomic number as a leading subscript and the mass number as a leading superscript

Answer 33

Isotopic notation

Question 34

What takes up the least amount of mass in an atom

Answer 34

Electrons

Question 35

A charged atom

Answer 35

Ion

Question 36

Superscript
Main symbol
Subscript

Isotopic notation

Answer 36

A
X
Z

Mass number
Element symbol
Atomic number

Question 37

How many electrons can the third principal energy level hold

Answer 37

18