Question 1

There are ________ protons, ________ electrons, and ________ neutrons in an atom of   Xe.

Accepted Answer

A) 129, 129, 129 
B) 129, 129, 75 
C) 54, 75, 129 
D) 54, 54, 75 
E) 54, 54, 129 
A) 129, 129, 129 
B) 129, 129, 75 
C) 54, 75, 129 
D) 54, 54, 75 
E) 54, 54, 129

Question 2

What is the molecular formula for nonane?

Accepted Answer

A) C9H18 
B) C9H20 
C) C10H20 
D) C10H22 
E) C10H24 
A) C9H18 
B) C9H20 
C) C10H20 
D) C10H22 
E) C10H24

Question 3

An atom of 14C contains ________ electrons.

Accepted Answer

A) 14 
B) 20 
C) 8 
D) 10 
E) 6 
A) 14 
B) 20 
C) 8 
D) 10 
E) 6

Question 4

In the periodic table, the elements are arranged in ________.

Accepted Answer

A) alphabetical order 
B) order of increasing atomic number 
C) order of increasing metallic properties 
D) order of increasing neutron content 
E) reverse alphabetical order 
A) alphabetical order 
B) order of increasing atomic number 
C) order of increasing metallic properties 
D) order of increasing neutron content 
E) reverse alphabetical order

Question 5

The formula of a salt is XCl2. The X-ion in this salt has 24 electrons. The metal X is ________.

Accepted Answer

A) Ni 
B) Fe 
C) Zn 
D) V 
E) Pd 
A) Ni 
B) Fe 
C) Zn 
D) V 
E) Pd

Question 6

Horizontal rows of the periodic table are known as ________.

Accepted Answer

A) periods 
B) groups 
C) metalloids 
D) metals 
E) nonmetals 
A) periods 
B) groups 
C) metalloids 
D) metals 
E) nonmetals

Question 7

Predict the empirical formula of the ionic compound that forms from magnesium and fluorine.

Accepted Answer

A) Mg2F3 
B) MgF 
C) Mg2F 
D) Mg3F2 
E) MgF2 
A) Mg2F3 
B) MgF 
C) Mg2F 
D) Mg3F2 
E) MgF2

Question 8

The element X has two naturally occurring isotopes. The masses (amu)and % abundances of the isotopes are given in the table below. The average atomic mass of the element is ________ amu.

Accepted Answer

A) 30.20 
B) 33.20 
C) 34.02 
D) 35.22 
E) 32.73 
A) 30.20 
B) 33.20 
C) 34.02 
D) 35.22 
E) 32.73

Question 9

The ions Ca2+ and PO43- form a salt with the formula ________.

Accepted Answer

A) CaPO4 
B) Ca2(PO4)3 
C) Ca2PO4 
D) Ca(PO4)2 
E) Ca3(PO4)2 
A) CaPO4 
B) Ca2(PO4)3 
C) Ca2PO4 
D) Ca(PO4)2 
E) Ca3(PO4)2

Question 10

What is the formula of the compound formed between strontium ions and nitrogen ions?

Accepted Answer

A) SrN 
B) Sr3N2 
C) Sr2N3 
D) SrN2 
E) SrN3 
A) SrN 
B) Sr3N2 
C) Sr2N3 
D) SrN2 
E) SrN3

Question 11

The nucleus of an atom does not contain ________.

Accepted Answer

A) protons 
B) protons or neutrons 
C) neutrons 
D) subatomic particles 
E) electrons 
A) protons 
B) protons or neutrons 
C) neutrons 
D) subatomic particles 
E) electrons

Question 12

How many neutrons are there in one atom of 184W?

Accepted Answer

A) 74 
B) 112 
C) 258 
D) 110 
E) 184 
A) 74 
B) 112 
C) 258 
D) 110 
E) 184

Question 13

The element X has three naturally occurring isotopes. The masses (amu)and % abundances of the isotopes are given in the table below. The average atomic mass of the element is ________ amu.

Accepted Answer

A) 17.20 
B) 16.90 
C) 17.65 
D) 17.11 
E) 16.9 
A) 17.20 
B) 16.90 
C) 17.65 
D) 17.11 
E) 16.9

Question 14

Of the following, the subatomic particle with the smallest mass is the ________.

Accepted Answer

A) proton 
B) neutron 
C) electron 
D) alpha particle 
E) isotope 
A) proton 
B) neutron 
C) electron 
D) alpha particle 
E) isotope

Question 15

Of the following, ________ contains the greatest number of electrons.

Accepted Answer

A) P3+ 
B) P 
C) P2- 
D) P3-  
E) P2+ 
A) P3+ 
B) P 
C) P2- 
D) P3-  
E) P2+

Question 16

Aluminum reacts with a certain nonmetallic element to form a compound with the general formula Al2X3. Element X must be from Group ________ of the Periodic Table of Elements.

Accepted Answer

A) 3A 
B) 4A 
C) 5A 
D) 6A 
E) 7A 
A) 3A 
B) 4A 
C) 5A 
D) 6A 
E) 7A

Question 17

Sodium forms an ion with a charge of ________.

Accepted Answer

A) 1+ 
B) 1- 
C) 2+ 
D) 2- 
E) 0 
A) 1+ 
B) 1- 
C) 2+ 
D) 2- 
E) 0

Question 18

Elements in Group 2A are known as the ________.

Accepted Answer

A) alkaline earth metals 
B) alkali metals 
C) chalcogens 
D) halogens 
E) noble gases 
A) alkaline earth metals 
B) alkali metals 
C) chalcogens 
D) halogens 
E) noble gases

Question 19

In the symbol below, x = ________.   Cl

Accepted Answer

A) 17 
B) 34 
C) 16 
D) 36 
E) not enough information to determine 
A) 17 
B) 34 
C) 16 
D) 36 
E) not enough information to determine

Question 20

In the symbol below, x is ________.   C

Accepted Answer

A) the number of neutrons 
B) the atomic number 
C) the mass number 
D) the isotope number 
E) the elemental symbol 
A) the number of neutrons 
B) the atomic number 
C) the mass number 
D) the isotope number 
E) the elemental symbol

Exam 2: Atoms, Molecules, and Ions

There are ________ protons, ________ electrons, and ________ neutrons in an atom of Xe.

What is the molecular formula for nonane?

An atom of 14C contains ________ electrons.

In the periodic table, the elements are arranged in ________.

The formula of a salt is XCl2. The X-ion in this salt has 24 electrons. The metal X is ________.

Horizontal rows of the periodic table are known as ________.

Predict the empirical formula of the ionic compound that forms from magnesium and fluorine.

The element X has two naturally occurring isotopes. The masses (amu)and % abundances of the isotopes are given in the table below. The average atomic mass of the element is ________ amu.

The ions Ca2+ and PO43- form a salt with the formula ________.

What is the formula of the compound formed between strontium ions and nitrogen ions?

The nucleus of an atom does not contain ________.

How many neutrons are there in one atom of 184W?

The element X has three naturally occurring isotopes. The masses (amu)and % abundances of the isotopes are given in the table below. The average atomic mass of the element is ________ amu.

Of the following, the subatomic particle with the smallest mass is the ________.

Of the following, ________ contains the greatest number of electrons.

Aluminum reacts with a certain nonmetallic element to form a compound with the general formula Al2X3. Element X must be from Group ________ of the Periodic Table of Elements.

Sodium forms an ion with a charge of ________.

Elements in Group 2A are known as the ________.

In the symbol below, x = ________. Cl

In the symbol below, x is ________. C

Introduction: Matter and Measurement

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

There are protons, electrons, and neutrons in an atom of Xe.

An atom of ¹⁴C contains ________ electrons.

The formula of a salt is XCl₂. The X-ion in this salt has 24 electrons. The metal X is ________.

The ions Ca²⁺ and PO₄^3- form a salt with the formula ________.

How many neutrons are there in one atom of ¹⁸⁴W?

Aluminum reacts with a certain nonmetallic element to form a compound with the general formula Al₂X₃. Element X must be from Group ________ of the Periodic Table of Elements.