Question 1

Based on its position in the periodic table, which atom would you predict to form a compound with one chlorine atom?

Accepted Answer

A)  boron 
B)  aluminum 
C)  lithium 
D)  calcium 
E)  carbon 
A)  boron 
B)  aluminum 
C)  lithium 
D)  calcium 
E)  carbon

Question 2

An unknown element is found to contain isotopes with the following masses and natural abundances: 38.9637 amu (93.08%), 39.9640 amu (0.012%), and 40.9618 amu (6.91%). Using these data, identify the element.

Accepted Answer

A)  S 
B)  Cl 
C)  Ar 
D)  K 
E)  Ca 
A)  S 
B)  Cl 
C)  Ar 
D)  K 
E)  Ca

Question 3

Which of the following is an alkali metal?

Accepted Answer

A)  K 
B)  Mg 
C)  Al 
D)  Cu 
E)  Ca 
A)  K 
B)  Mg 
C)  Al 
D)  Cu 
E)  Ca

Question 4

Cobalt is best described as a __________

Accepted Answer

A)  metalloid. 
B)  transition metal. 
C)  chalcogen. 
D)  noble gas. 
E)  nonmetal. 
A)  metalloid. 
B)  transition metal. 
C)  chalcogen. 
D)  noble gas. 
E)  nonmetal.

Question 5

In the Rutherford-Geiger-Marsden experiment, F1F1F1S1F1F1F10 particles were projected at a thin film of __________

Accepted Answer

A)  gold. 
B)  silver. 
C)  platinum. 
D)  sodium. 
E)  aluminum. 
A)  gold. 
B)  silver. 
C)  platinum. 
D)  sodium. 
E)  aluminum.

Question 6

Zinc has five naturally occurring isotopes with an average mass of 65.39 amu. Three isotopes, in roughly equal amounts, account for 95% of zinc. Which isotope is most abundant?

Accepted Answer

A) "64Zn", 63.9291 amu 
B) "66Zn", 65.9260 amu 
C) "67Zn", 66.9271 amu 
D) "68Zn", 67.9249 amu 
E) "70Zn", 69.9253 amu 
A) "64Zn", 63.9291 amu 
B) "66Zn", 65.9260 amu 
C) "67Zn", 66.9271 amu 
D) "68Zn", 67.9249 amu 
E) "70Zn", 69.9253 amu

Question 7

Which one of the following is an anion?

Accepted Answer

A)  Na+ 
B)  CO2 
C)  Cl- 
D)  Na 
E)  O3 
A)  Na+ 
B)  CO2 
C)  Cl- 
D)  Na 
E)  O3

Question 8

Give an example of an ionic compound.

Accepted Answer

Sodium chl

Question 9

What is the symbol for sulfur?

Accepted Answer

A)  Si 
B)  Sc 
C)  Su 
D)  S 
E)  Sf 
A)  Si 
B)  Sc 
C)  Su 
D)  S 
E)  Sf

Question 10

Which one of the following statements is not consistent with Dalton's atomic theory of matter?

Accepted Answer

A)  Atoms of one element can be converted into atoms of another element. 
B)  Each element is composed of atoms that are identical in size, mass, and chemical properties. 
C)  Compounds are formed from different atoms in simple whole number ratios. 
D)  Atoms of different elements can combine in several different proportions to make different compounds. 
E)  Matter is discrete, as proposed by Democritus. 
A)  Atoms of one element can be converted into atoms of another element. 
B)  Each element is composed of atoms that are identical in size, mass, and chemical properties. 
C)  Compounds are formed from different atoms in simple whole number ratios. 
D)  Atoms of different elements can combine in several different proportions to make different compounds. 
E)  Matter is discrete, as proposed by Democritus.

Question 11

Give an example of a halogen.

Accepted Answer

Bromine; a

Question 12

Boron, which has an average atomic mass of 10.81 amu, has two stable isotopes: boron-10 (19.78%) and boron-11 (80.22%). Boron-10 has an atomic mass of 10.0129 amu; what is the atomic mass of boron-11?

Accepted Answer

The answer of Boron, which has an average atomic mass...

Question 13

According to the Big Bang theory, which statement about the origin of the elements is not correct?

Accepted Answer

A)  Initially, energy was transformed into electrons and other elementary particles. 
B)  As the universe cooled, neutrons and protons were formed. 
C)  Collisions of neutrons and protons produced deuterons, which then led to the formation of alpha particles. 
D)  The nuclides of the elements then were formed by nuclear reactions in the interior of stars. 
E)  These nuclear reactions all require the addition of energy to form the elements. 
A)  Initially, energy was transformed into electrons and other elementary particles. 
B)  As the universe cooled, neutrons and protons were formed. 
C)  Collisions of neutrons and protons produced deuterons, which then led to the formation of alpha particles. 
D)  The nuclides of the elements then were formed by nuclear reactions in the interior of stars. 
E)  These nuclear reactions all require the addition of energy to form the elements.

Question 14

A cation has a __________ charge, and an anion has a __________ charge.

Accepted Answer

The answer of A cation has a __________ charge, and...

Question 15

Which one of the following experiments provided evidence that atoms contained small massive nuclei with positive charges?

Accepted Answer

A)  Bunsen and Kirchoff's flame test 
B)  Fraunhofer lines 
C)  the Rutherford-Geiger-Marsden experiment 
D)  Thomson's experiments with cathode ray tubes 
E)  Millikan's oil-drop experiment 
A)  Bunsen and Kirchoff's flame test 
B)  Fraunhofer lines 
C)  the Rutherford-Geiger-Marsden experiment 
D)  Thomson's experiments with cathode ray tubes 
E)  Millikan's oil-drop experiment

Question 16

Which has more mass: a lump of coal (assumed to be 100% carbon) or the carbon dioxide gas formed from burning the lump of coal?

Accepted Answer

A)  The lump of coal because it is a solid. 
B)  The lump of coal because gases have little mass. 
C)  The carbon dioxide gas because it occupies a much larger volume. 
D)  The carbon dioxide gas because it includes oxygen that was added from the air. 
E)  Both weigh the same because mass is conserved. 
A)  The lump of coal because it is a solid. 
B)  The lump of coal because gases have little mass. 
C)  The carbon dioxide gas because it occupies a much larger volume. 
D)  The carbon dioxide gas because it includes oxygen that was added from the air. 
E)  Both weigh the same because mass is conserved.

Question 17

What is the correct name for FeCl3?

Accepted Answer

A)  iron(III) chloride 
B)  iron trichloride 
C)  ferrum trichloride 
D)  ferric trichloride 
E)  iron chloride 
A)  iron(III) chloride 
B)  iron trichloride 
C)  ferrum trichloride 
D)  ferric trichloride 
E)  iron chloride

Question 18

Elements in group 18 (VIIIA) are called __________

Accepted Answer

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

Question 19

Give an example of an alkaline earth metal.

Accepted Answer

Calcium; a

Question 20

Which one of the formula-name combinations is not correct?

Accepted Answer

A)  sulfur monoxide: SO 
B)  sulfur dioxide: SO2 
C)  sulfur trioxide: SO3 
D)  disulfur oxide: S2O 
E)  heptasulfur oxide: S6O 
A)  sulfur monoxide: SO 
B)  sulfur dioxide: SO2 
C)  sulfur trioxide: SO3 
D)  disulfur oxide: S2O 
E)  heptasulfur oxide: S6O

Exam 2: Atoms, Ions, and Compounds

Based on its position in the periodic table, which atom would you predict to form a compound with one chlorine atom?

An unknown element is found to contain isotopes with the following masses and natural abundances: 38.9637 amu (93.08%), 39.9640 amu (0.012%), and 40.9618 amu (6.91%). Using these data, identify the element.

Which of the following is an alkali metal?

Cobalt is best described as a __________

In the Rutherford-Geiger-Marsden experiment,  particles were projected at a thin film of __________

Zinc has five naturally occurring isotopes with an average mass of 65.39 amu. Three isotopes, in roughly equal amounts, account for 95% of zinc. Which isotope is most abundant?

Which one of the following is an anion?

Give an example of an ionic compound.

What is the symbol for sulfur?

Which one of the following statements is not consistent with Dalton's atomic theory of matter?

Give an example of a halogen.

Boron, which has an average atomic mass of 10.81 amu, has two stable isotopes: boron-10 (19.78%) and boron-11 (80.22%). Boron-10 has an atomic mass of 10.0129 amu; what is the atomic mass of boron-11?

According to the Big Bang theory, which statement about the origin of the elements is not correct?

A cation has a __________ charge, and an anion has a __________ charge.

Which one of the following experiments provided evidence that atoms contained small massive nuclei with positive charges?

Which has more mass: a lump of coal (assumed to be 100% carbon) or the carbon dioxide gas formed from burning the lump of coal?

What is the correct name for FeCl3?

Elements in group 18 (VIIIA) are called __________

Give an example of an alkaline earth metal.

Which one of the formula-name combinations is not correct?

Matter, Energy, and the Origins of the Universe

Chemical Reactions and Earths Composition

Solution Chemistry and the Hydrosphere

Thermochemistry

Properties of Gases: the Air We Breathe

Electrons in Atoms and Periodic Properties

Chemical Bonding and Climate Change

Molecular Geometry and Bonding Theories

Forces Between Ions and Molecules

Solutions and Their Colligative Properties

The Chemistry of Solids

Organic Chemistry: Fuels, Pharmaceuticals, and Materials

Thermodynamics: Spontaneous Processes, Entropy, and Free Energy

Chemical Kinetics

Chemical Equilibrium

Equilibrium in the Aqueous Phase

The Colorful Chemistry of Metals

Electrochemistry and the Quest for Clean Energy

Biochemistry: the Compounds of Life

Nuclear Chemistry

Life and the Periodic Table

Filters

A cation has a charge, and an anion has a charge.

What is the correct name for FeCl₃?