Question 1

-What is the chemical symbol for niobium?

Accepted Answer

A) Au 
B) Nb 
C) Pb 
D) Nn 
A) Au 
B) Nb 
C) Pb 
D) Nn

Question 2

The compound,Cu(I O3 )2,is named

Accepted Answer

A) copper iodate(II). 
B) copper(I)iodate. 
C) copper(I)iodate(II). 
D) copper(II)iodate. 
A) copper iodate(II). 
B) copper(I)iodate. 
C) copper(I)iodate(II). 
D) copper(II)iodate.

Question 3

What group of elements does the shaded area in the following periodic table indicate?

Accepted Answer

A) gases 
B) metals 
C) nonmetals 
D) semimetals 
A) gases 
B) metals 
C) nonmetals 
D) semimetals

Question 4

-Which of the above drawings represents a K+ ion?

Accepted Answer

A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d) 
A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d)

Question 5

The number of electrons in the ion C4- is ________.

Accepted Answer

Question 6

Which horizontal row of the periodic table contains the most elements?

Accepted Answer

A) row 4 
B) row 5 
C) row 6 
D) They all contain the same number of elements. 
A) row 4 
B) row 5 
C) row 6 
D) They all contain the same number of elements.

Question 7

What type of bonding is found in the compound NH3?

Accepted Answer

A) covalent bonding 
B) hydrogen bonding 
C) ionic bonding 
D) metallic bonding 
A) covalent bonding 
B) hydrogen bonding 
C) ionic bonding 
D) metallic bonding

Question 8

Use the periodic table below to answer the following questions.  
-Which elements commonly form covalent bonds?

Accepted Answer

A) A and B 
B) A and C 
C) B and D 
D) C and D 
A) A and B 
B) A and C 
C) B and D 
D) C and D

Question 9

Which of the following drawings represents a collection of acetylene (C2H2)molecules? The shaded spheres represent carbon atoms and the unshaded spheres represent hydrogen atoms.

Accepted Answer

A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d) 
A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d)

Question 10

Radon belongs to the ________ group of the periodic table.

Accepted Answer

A) alkali metal 
B) alkaline earth metal 
C) halogen 
D) noble gas 
A) alkali metal 
B) alkaline earth metal 
C) halogen 
D) noble gas

Question 11

Na2S is named

Accepted Answer

A) sodium disulfide. 
B) sodium sulfide. 
C) sodium(II)sulfide. 
D) sodium sulfur. 
A) sodium disulfide. 
B) sodium sulfide. 
C) sodium(II)sulfide. 
D) sodium sulfur.

Question 12

Hydrochloric acid is an example of

Accepted Answer

A) a compound. 
B) an element. 
C) an ion. 
D) a mixture. 
A) a compound. 
B) an element. 
C) an ion. 
D) a mixture.

Question 13

Water is an example of

Accepted Answer

A) a compound. 
B) an element. 
C) a mixture. 
D) an ion. 
A) a compound. 
B) an element. 
C) a mixture. 
D) an ion.

Question 14

Which of the following elements is classified as a semimetal?

Accepted Answer

A) gold 
B) astatine 
C) osmium 
D) berkelium 
A) gold 
B) astatine 
C) osmium 
D) berkelium

Question 15

How many electrons are in the ion,Zn2+?

Accepted Answer

A) 28 
B) 30 
C) 32 
D) 65 
A) 28 
B) 30 
C) 32 
D) 65

Question 16

The atoms of a particular element all have the same number of protons as neutrons.Which of the following must be true?

Accepted Answer

A) The atomic weight must be a whole number. 
B) The mass number for each atom must equal the atomic weight of the element. 
C) The mass number must be exactly twice the atomic number for each atom. 
D) All of these are true. 
A) The atomic weight must be a whole number. 
B) The mass number for each atom must equal the atomic weight of the element. 
C) The mass number must be exactly twice the atomic number for each atom. 
D) All of these are true.

Question 17

-Which of the above drawings represents a Ca2+ ion?

Accepted Answer

A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d) 
A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d)

Question 18

Ethane is an example of

Accepted Answer

A) a compound. 
B) an element. 
C) a mixture. 
D) a cation. 
A) a compound. 
B) an element. 
C) a mixture. 
D) a cation.

Question 19

How many protons (p)and neutrons (n)are in an atom of calcium-46?

Accepted Answer

A) 20 p,26 n 
B) 20 p,46 n 
C) 26 p,20 n 
D) 46 p,20 n 
A) 20 p,26 n 
B) 20 p,46 n 
C) 26 p,20 n 
D) 46 p,20 n

Question 20

To the nearest whole number,the number of grams of Ba in 3.25 mol of Ba is ________.

Accepted Answer

The answer of To the nearest whole number,the number of...

Exam 2: Atoms, molecules, and Ions

-What is the chemical symbol for niobium?

The compound,Cu(I O3 )2,is named

What group of elements does the shaded area in the following periodic table indicate?

-Which of the above drawings represents a K+ ion?

The number of electrons in the ion C4- is ________.

Which horizontal row of the periodic table contains the most elements?

What type of bonding is found in the compound NH3?

Use the periodic table below to answer the following questions. -Which elements commonly form covalent bonds?

Which of the following drawings represents a collection of acetylene (C2H2)molecules? The shaded spheres represent carbon atoms and the unshaded spheres represent hydrogen atoms.

Radon belongs to the ________ group of the periodic table.

Na2S is named

Hydrochloric acid is an example of

Water is an example of

Which of the following elements is classified as a semimetal?

How many electrons are in the ion,Zn2+?

The atoms of a particular element all have the same number of protons as neutrons.Which of the following must be true?

-Which of the above drawings represents a Ca2+ ion?

Ethane is an example of

How many protons (p)and neutrons (n)are in an atom of calcium-46?

To the nearest whole number,the number of grams of Ba in 3.25 mol of Ba is ________.

Chemical Tools: Experimentation and Measurement

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Covalent Compounds: Bonding Theories and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids, solids, and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

The compound,Cu(IO₃ )₂,is named

-Which of the above drawings represents a K⁺ ion?

The number of electrons in the ion C^4- is ________.

What type of bonding is found in the compound NH₃?

Which of the following drawings represents a collection of acetylene (C₂H₂)molecules? The shaded spheres represent carbon atoms and the unshaded spheres represent hydrogen atoms.

Na₂S is named

How many electrons are in the ion,Zn²⁺?

-Which of the above drawings represents a Ca²⁺ ion?