Chapter 2 - Atoms, Molecules, and Ions Review

Question 1

Atoms have equal numbers of protons, electrons, and neutrons, so atoms have no net electrical charge.

Accepted Answer

False

Question 2

This scientist is credited with the discovery of the electron.

Accepted Answer

Thomson

Question 3

Dalton's atomic theory includes which of the following postulates?

Accepted Answer

None of the above

Question 4

Name the following compound.

Accepted Answer

Copper (II) nitrate

Question 5

Write the chemical formula for iron (III) sulfate.

Accepted Answer

Fe2(SO4)3

Question 6

This scientist proposed the plum pudding model of the atom.

Accepted Answer

Thomson

Question 7

Dalton's atomic theory includes which of the following postulates?

Accepted Answer

All of the above

Question 8

20Ne, 21Ne, and 22Ne are different ________ of each other.

Accepted Answer

isotopes

Question 9

This family tends to form ions with an electronic charge of negative one (1-).

Accepted Answer

Halogens

Question 10

This scientist is coined the term radioactivity (the spontaneous emission of high energy radiation).

Accepted Answer

Curie

Question 11

Write the chemical formula for ammonium hydroxide.

Accepted Answer

NH4OH

Question 12

Name the following compound.

Accepted Answer

Sodium bicarbonate, Sodium hydrogen carbonate

Question 13

This scientist proposed the experimental setup below in their exploration of atomic structure.

Accepted Answer

Rutherford

Question 14

Write the formula for tricarbon dioxide

Accepted Answer

C3O2

Question 15

This scientist is credited with discovering the charge on a single electron.

Accepted Answer

Millikan

Question 16

Name the following.

Accepted Answer

Phosphoric acid

Question 17

Name the following compound.

Accepted Answer

Lithium hydride

Question 18

This scientist discovered that a compound of uranium was radioactive.

Accepted Answer

Becquerel

Question 19

How many electrons are present in an ion of sulfur?

Accepted Answer

18

Question 20

Based on the seven diatomic elements, what radioactive element is also likely to be diatomic?

Accepted Answer

Astatine

Question 21

From the mass spectrum below, what is the relative natural abundance of chlorine-37 (37Cl)?

Accepted Answer

~25%

Question 22

Name the following.

Accepted Answer

hydrogen chloride, hydrochloric acid

Question 23

Beta particles have an electronic charge of

Accepted Answer

1- (negative one)

Question 24

What is the relationship between the following two hydrocarbons?

Accepted Answer

They are different alkanes

Question 25

Cathode rays are also known as

Accepted Answer

Electrons

Question 26

This family tends to be nonreactive in chemistry.

Accepted Answer

Noble gases

Question 27

This family tends to form ions with an electronic charge of positive one (1+).

Accepted Answer

Alkali Metals

Question 28

This scientist used the experimental setup pictured in their exploration of cathode rays.

Accepted Answer

Thomson

Question 29

This scientist proposed the nuclear model of the atom and subsequently discovered protons within the nucleus.

Accepted Answer

Rutherford

Question 30

Write the chemical formula for potassium chlorite.

Accepted Answer

KClO2

Question 31

Dalton's atomic theory incorporated what laws of matter?

Accepted Answer

Law of Conservation of Mass and Law of Definite Proportions

Question 32

Which of the following, if any, has an empirical formula different from its molecular formula?

Accepted Answer

Hydrogen Peroxide

Question 33

This type of radiation has no mass and is neutral.

Accepted Answer

Gamma

Question 34

How many protons are present in an ion of sulfur?

Accepted Answer

16

Question 35

This type of radiation is relatively very massive and has an electronic charge of positive two (2+).

Accepted Answer

Alpha

Question 36

Name the following.

Accepted Answer

Phosphorus pentabromide

Question 37

Particles with like charges repel, whereas particles of opposing charges attract

Accepted Answer

True

Question 38

Which of the following hydrocarbons are structural isomers of hexane?

Accepted Answer

all are structural isomers

Question 39

How many protons are present in a copper (II) ion?

Accepted Answer

29

Question 40

What law of matter was postulated from Dalton's atomic theory?

Accepted Answer

Law of Multiple Proportions

Question 41

Alpha particles have an electronic charge of

Accepted Answer

2+ (positive two)

Question 42

How many electrons does Neon-20 (20Ne), the most abundant form of Ne, have?

Accepted Answer

10

Question 43

How many neutrons does Neon-21 (21Ne), the least abundant form of Ne, have?

Accepted Answer

11

Question 44

Write the formula for the following

Accepted Answer

HClO

Question 45

Given the spectrum below, what is the average atomic mass of Chlorine?

Accepted Answer

35.5

Question 46

This scientist used the experimental setup pictured in their exploration of cathode rays.

Accepted Answer

Millikan

Question 47

This scientist may have used an experimental setup similar to that pictured below in their exploration of radiation.

Accepted Answer

Rutherford

Question 48

This scientist is well known for their research associated with alpha, beta, and gamma radiation.

Accepted Answer

Rutherford

Question 49

This element is not considered diatomic.

Accepted Answer

Helium

Question 50

This type of radiation is not massive and has an electronic charge of negative one (1-).

Accepted Answer

Beta

Question 51

How many electrons are present in a copper (II) ion?

Accepted Answer

27

Chapter 2 - Atoms, Molecules, and Ions Review

Questions 51

Chapter 2 - Atoms, Molecules, and Ions Review

Questions 51