Question 1

Give the formula of magnesium nitrate.

Accepted Answer

The answer of Give the formula of magnesium nitrate....

Question 2

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 3

Atoms of the same element with different mass numbers are called

Accepted Answer

A) ions. 
B) neutrons. 
C) allotropes. 
D) chemical families. 
E) isotopes. 
A) ions. 
B) neutrons. 
C) allotropes. 
D) chemical families. 
E) isotopes.

Question 4

Marie Curie suggested the name "radioactivity" to describe the spontaneous emission of particles and/or radiation.

Accepted Answer

A) True 
 B)False

Question 5

Which one of the following elements is most likely to form a 2+ ion?

Accepted Answer

A) beryllium 
B) carbon 
C) fluorine 
D) oxygen 
E) sodium 
A) beryllium 
B) carbon 
C) fluorine 
D) oxygen 
E) sodium

Question 6

Predict the formula for the binary compound formed between aluminum and fluorine.

Accepted Answer

The answer of Predict the formula for the binary compound...

Question 7

Give the number of protons (p), electrons (e), and neutrons (n)in one atom of nickel-62.

Accepted Answer

A) 28 p, 28 e, 28 n 
B) 28 p, 28 e, 34 n 
C) 28 p, 28 e, 62 n 
D) 62 p, 28 e, 28 n 
E) 62 p, 62 e, 28 n 
A) 28 p, 28 e, 28 n 
B) 28 p, 28 e, 34 n 
C) 28 p, 28 e, 62 n 
D) 62 p, 28 e, 28 n 
E) 62 p, 62 e, 28 n

Question 8

The Stock system name for As2S5 is

Accepted Answer

A) arsenic(V)sulfide. 
B) diarsenic pentasulfide. 
C) arsenic(III)sulfide. 
D) arsenic(V)sulfate. 
E) diarsenic sulfate. 
A) arsenic(V)sulfide. 
B) diarsenic pentasulfide. 
C) arsenic(III)sulfide. 
D) arsenic(V)sulfate. 
E) diarsenic sulfate.

Question 9

How many protons are there in one atom of nickel?

Accepted Answer

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

Question 10

Which one of the following elements is most likely to form a 2- ion?

Accepted Answer

A) scandium 
B) selenium 
C) silicon 
D) strontium 
E) iodine 
A) scandium 
B) selenium 
C) silicon 
D) strontium 
E) iodine

Question 11

Write the formula for the acid formed from the hydrogen sulfate anion, and then name the acid.

Accepted Answer

The answer of Write the formula for the acid formed...

Question 12

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

Accepted Answer

64 electro

Question 13

The Stock system name for Co2(SO3)3 is:

Accepted Answer

A) cobalt sulfate 
B) cobalt(II)sulfite 
C) cobalt(II)sulfate 
D) cobalt(III)sulfite 
E) cobalt(III)sulfate 
A) cobalt sulfate 
B) cobalt(II)sulfite 
C) cobalt(II)sulfate 
D) cobalt(III)sulfite 
E) cobalt(III)sulfate

Question 14

Describe the contributions of Marie Curie.

Accepted Answer

(note that answers will vary)Marie Curie

Question 15

The mineral pyrolusite is a compound of manganese-55 and oxygen-16. If 63% of the mass of pyrolusite is due to manganese, what is the empirical formula of pyrolusite?

Accepted Answer

A) MnO 
B) Mn2O 
C) Mn2O2 
D) MnO2 
E) none of these 
A) MnO 
B) Mn2O 
C) Mn2O2 
D) MnO2 
E) none of these

Question 16

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

Accepted Answer

Hydrogen, nitrogen,

Question 17

The elements known as the halogens are useful as disinfectants. Name two halogens.

Accepted Answer

(two of th

Question 18

Use the periodic table above to show where the metalloids are located.

Accepted Answer

The answer of Use the periodic table above to show...

Question 19

An aluminum ion, Al3+, has:

Accepted Answer

A) 13 protons and 13 electrons 
B) 27 protons and 24 electrons 
C) 16 protons and 13 electrons 
D) 13 protons and 10 electrons 
E) 10 protons and 13 electrons 
A) 13 protons and 13 electrons 
B) 27 protons and 24 electrons 
C) 16 protons and 13 electrons 
D) 13 protons and 10 electrons 
E) 10 protons and 13 electrons

Question 20

Use the following to answer questions 70-76:  
-Use the periodic table above to show where the alkali metals are located.

Accepted Answer

The answer of Use the following to answer questions 70-76:...

Exam 2: Atoms, Molecules, and Ions

Give the formula of magnesium nitrate.

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

Atoms of the same element with different mass numbers are called

Marie Curie suggested the name "radioactivity" to describe the spontaneous emission of particles and/or radiation.

Which one of the following elements is most likely to form a 2+ ion?

Predict the formula for the binary compound formed between aluminum and fluorine.

Give the number of protons (p), electrons (e), and neutrons (n)in one atom of nickel-62.

The Stock system name for As2S5 is

How many protons are there in one atom of nickel?

Which one of the following elements is most likely to form a 2- ion?

Write the formula for the acid formed from the hydrogen sulfate anion, and then name the acid.

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

The Stock system name for Co2(SO3)3 is:

Describe the contributions of Marie Curie.

The mineral pyrolusite is a compound of manganese-55 and oxygen-16. If 63% of the mass of pyrolusite is due to manganese, what is the empirical formula of pyrolusite?

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

The elements known as the halogens are useful as disinfectants. Name two halogens.

Use the periodic table above to show where the metalloids are located.

An aluminum ion, Al3+, has:

Use the following to answer questions 70-76: -Use the periodic table above to show where the alkali metals are located.

Introduction

Stoichiometry

Reactions in Aqueous Solution

Gases

Energy Relationships in Chemical Reactions

The Electronic Structure of Atoms

The Periodic Table

Chemical Bonding I: the Covalent Bond

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Introduction to Organic Chemistry

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Thermodynamics

Redox Reactions and Electrochemistry

The Chemistry of Coordination Compounds

Nuclear Chemistry

Organic Polymerssynthetic and Natural

Filters

The Stock system name for As₂S₅ is

The Stock system name for Co₂(SO₃)₃ is:

An aluminum ion, Al³⁺, has: