Review of Atomic Structure

Question 1

Why are atoms electrically neutral?

Accepted Answer

Protons and electrons cancel out each other’s charge.

Question 2

What is the maximum number of valence electrons?

Accepted Answer

8 (octet)

Question 3

Do you have your periodic table out?

Accepted Answer

yes, not yet but I am getting it out now

Question 4

Which of the following is the correct Bohr's model for fluorine?

Accepted Answer

iii

Question 5

Modern atomic theory shows electrons orbiting around the nucleus like planets around the sun.

Accepted Answer

False

Question 6

The term “atom” comes from the Greek philosopher named?

Accepted Answer

Democritus

Question 7

How many electrons are in a neutral atom of Potassium (K)?

Accepted Answer

19

Question 8

What is the atomic number of Bromine (Br)?

Accepted Answer

35

Question 9

What element is modeled below?

Accepted Answer

Lithium

Question 10

How many protons are in Gallium-65 (65Ga)?

Accepted Answer

31

Question 11

The atomic number...

Accepted Answer

all of these

Question 12

What model of the atom is represented in this image?

Accepted Answer

Bohr’s Model

Question 13

Which Lewis dot diagram is correct?

Accepted Answer

B

Question 14

Which Bohr's Model is correct?

Accepted Answer

C

Question 15

Experiments with the cathode ray resulted in the discovery of?

Accepted Answer

Electrons

Question 16

Which subatomic particle is the smallest and carries the least mass?

Accepted Answer

electrons

Question 17

Which scientist is responsible for the discovery of the nucleus?

Accepted Answer

Ernest Rutherford

Question 18

How many energy levels does an atom of mercury have?

Accepted Answer

6

Question 19

Which Lewis dot diagram is correct?

Accepted Answer

C

Question 20

To become a negative ion, an atom must ____________.

Accepted Answer

gain electrons

Question 21

To become a positive ion, an atom must ___________ .

Accepted Answer

lose electrons

Question 22

What is the name of the element Sn?

Accepted Answer

Tin

Question 23

Chlorine-35 has how many protons, neutrons, and electrons?

Accepted Answer

17, 18, 17

Question 24

Which element has the symbol P?

Accepted Answer

Phosphorus

Question 25

Which listing below shows the proper charges of the subatomic particles?

Accepted Answer

p = +1 n = 0 e = -1

Question 26

Which Lewis dot diagram is correct?

Accepted Answer

E

Question 27

What did Rutherford conclude about the atom as a result of his Gold Foil experiment?

Accepted Answer

The atom is composed of mainly empty space.

Question 28

How many neutrons are in an atom of Beryllium-9?

Accepted Answer

5

Question 29

The mass of an atom is

Accepted Answer

all of these

Question 30

The center of the atom is:

Accepted Answer

The nucleus

Question 31

Which model of the atom is used today?

Accepted Answer

Quantum Mechanical Model

Question 32

Valence electrons are located _________.

Accepted Answer

in the outermost shell

Question 33

Which of the following statements is NOT one of Dalton’s theories?

Accepted Answer

Atoms have a nucleus.

Question 34

The number of protons an atom contains is identified by the ____ ____ on the periodic table.

Accepted Answer

atomic #

Question 35

The majority of the mass of an atom comes from which subatomic particle(s)?

Accepted Answer

Neutrons + Protons

Question 36

How many valence electrons does strontium have?

Accepted Answer

2

Question 37

What model of the atom is represented in this image?

Accepted Answer

Plum Pudding Model

Question 38

Which element does the following Bohr's Model describe?

Accepted Answer

Argon

Question 39

What is the mass number of Aluminum-27 (27Al)?

Accepted Answer

27

Question 40

To find the number of neutrons in an atom...

Accepted Answer

subtract the atomic number from the mass number

Question 41

Carbon-13 and Carbon-14 are examples of ________ of the carbon element.

Accepted Answer

isotopes

Question 42

The net charge of the electron cloud is...

Accepted Answer

negative

Question 43

How many neutrons does Rb-85 contain?

Accepted Answer

48

Question 44

The net charge of the atom below is...

Accepted Answer

no charge, 0

Question 45

Which of the following is the correct Bohr's model for nitrogen?

Accepted Answer

i

Question 46

If I add protons to an atom, I'll be changing:

Accepted Answer

element

Question 47

The average mass of all the isotopes for a given atom is called ___________.

Accepted Answer

average atomic mass

Question 48

Which element has 30 protons?

Accepted Answer

Zinc

Question 49

The net charge of the nucleus of an atom is...

Accepted Answer

positive

Question 50

The decimal located under the elements symbol represents the:

Accepted Answer

average atomic mass

Review of Atomic Structure

Questions 50

Review of Atomic Structure

Questions 50