Question 1

A magnesium ion, Mg2+, has

Accepted Answer

A) 12 protons and 13 electrons. 
B) 24 protons and 26 electrons. 
C) 12 protons and 10 electrons. 
D) 24 protons and 22 electrons. 
E) 12 protons and 14 electrons. 
A) 12 protons and 13 electrons. 
B) 24 protons and 26 electrons. 
C) 12 protons and 10 electrons. 
D) 24 protons and 22 electrons. 
E) 12 protons and 14 electrons.

Question 2

Name the compound Al2O3

Accepted Answer

A) Aluminum oxide 
B) Aluminum (II)oxide 
C) Dialuminum trioxide 
D) Aluminum trioxide 
E) Aluminum (I)oxide 
A) Aluminum oxide 
B) Aluminum (II)oxide 
C) Dialuminum trioxide 
D) Aluminum trioxide 
E) Aluminum (I)oxide

Question 3

What are the two different ions present in the compound CaS ?

Accepted Answer

A) Ca+, S- 
B) Ca2-, S2+ 
C) Ca-, S+ 
D) Ca2+, S2- 
E) Ca, S 
A) Ca+, S- 
B) Ca2-, S2+ 
C) Ca-, S+ 
D) Ca2+, S2- 
E) Ca, S

Question 4

What is the formula for dinitrogen monoxide?

Accepted Answer

The answer of What is the formula for dinitrogen monoxide?...

Question 5

What are the seven elements that naturally occur as diatomic molecules?

Accepted Answer

Hydrogen, nitrogen,

Question 6

Describe the contributions of Marie Curie.

Accepted Answer

(note that answers will vary)Marie Curie

Question 7

Define allotrope.

Accepted Answer

An allotrope is one

Question 8

Using a cathode ray tube, J.J.Thomson determined the magnitude of the electric charge on the electron.

Accepted Answer

A) True 
 B)False

Question 9

Give the formula of copper(II)bromide.

Accepted Answer

The answer of Give the formula of copper(II)bromide....

Question 10

Give the formula of nitrous acid.

Accepted Answer

The answer of Give the formula of nitrous acid....

Question 11

When J.J.Thomson discovered the electron, what physical property of the electron did he measure?

Accepted Answer

A) its charge, e 
B) its charge-to-mass ratio, e/m 
C) its temperature, T 
D) its mass, m 
E) its atomic number, Z 
A) its charge, e 
B) its charge-to-mass ratio, e/m 
C) its temperature, T 
D) its mass, m 
E) its atomic number, Z

Question 12

What are the three types of radiation that can be produced by the decay of radioactive substances like uranium?

Accepted Answer

Alpha, bet

Question 13

How many protons are there in one atom of magnesium?

Accepted Answer

The answer of How many protons are there in one...

Question 14

Define the term molecule.

Accepted Answer

A molecule is an aggregate of

Question 15

What are the two different ions present in the compound FeCl3?

Accepted Answer

A) Fe2+, Cl3- 
B) Fe3+, Cl3- 
C) Fe+,  Cl- 
D) Fe3+, Cl- 
E) Fe+, Cl- 
A) Fe2+, Cl3- 
B) Fe3+, Cl3- 
C) Fe+,  Cl- 
D) Fe3+, Cl- 
E) Fe+, Cl-

Question 16

Give the formula of hydrochloric acid.

Accepted Answer

The answer of Give the formula of hydrochloric acid....

Question 17

How many electrons, protons, and neutrons are in a neutral atom of the following isotope of gadolinium?

Accepted Answer

64 electro

Question 18

Name the following H3PO3

Accepted Answer

Question 19

An iron(II)ion has:

Accepted Answer

A) 24 electrons and a charge of 2+ 
B) 24 electrons and a charge of 2- 
C) 26 electrons and a charge of 2+ 
D) 28 electrons and a charge of 2+ 
E) 28 electrons and a charge of 2- 
A) 24 electrons and a charge of 2+ 
B) 24 electrons and a charge of 2- 
C) 26 electrons and a charge of 2+ 
D) 28 electrons and a charge of 2+ 
E) 28 electrons and a charge of 2-

Question 20

Which of the following are isotopes?

Accepted Answer

A) (14C and 13
C)  
B) (14C and 14N) 
C) (14N and 14N3-) 
D) (12C and 12CO) 
E) (14N and 14N2) 
A) (14C and 13
C)  
B) (14C and 14N) 
C) (14N and 14N3-) 
D) (12C and 12CO) 
E) (14N and 14N2)

Exam 2: Atoms, Molecules, and Ions

A magnesium ion, Mg2+, has

Name the compound Al2O3

What are the two different ions present in the compound CaS ?

What is the formula for dinitrogen monoxide?

What are the seven elements that naturally occur as diatomic molecules?

Describe the contributions of Marie Curie.

Define allotrope.

Using a cathode ray tube, J.J.Thomson determined the magnitude of the electric charge on the electron.

Give the formula of copper(II)bromide.

Give the formula of nitrous acid.

When J.J.Thomson discovered the electron, what physical property of the electron did he measure?

What are the three types of radiation that can be produced by the decay of radioactive substances like uranium?

How many protons are there in one atom of magnesium?

Define the term molecule.

What are the two different ions present in the compound FeCl3?

Give the formula of hydrochloric acid.

How many electrons, protons, and neutrons are in a neutral atom of the following isotope of gadolinium?

Name the following H3PO3

An iron(II)ion has:

Which of the following are isotopes?

Chemistry: the Study of Change

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

A magnesium ion, Mg²⁺, has

Name the compound Al₂O₃

What are the two different ions present in the compound FeCl₃?

Name the following H₃PO₃