Question 1

The elements in Group 8A are called the ________.

Accepted Answer

The answer of The elements in Group 8A are called...

Question 2

The alkali metal elements are found in _______ of the periodic table.

Accepted Answer

A) Group 1A 
B) Group 2A 
C) Group 3A 
D) Period 7 
E) Period 1 
A) Group 1A 
B) Group 2A 
C) Group 3A 
D) Period 7 
E) Period 1

Question 3

The elements in a column of the periodic table are known as

Accepted Answer

A) metalloids. 
B) a period. 
C) noble gases. 
D) a group. 
E) nonmetals. 
A) metalloids. 
B) a period. 
C) noble gases. 
D) a group. 
E) nonmetals.

Question 4

Lithium forms compounds which are used in dry cells,storage batteries,and in high-temperature lubricants.It has two naturally occurring isotopes,6Li (isotopic mass = 6.015123 amu)and 7Li (isotopic mass = 7.016005 amu).Lithium has an atomic mass of 6.9412 amu.What is the percent abundance of lithium-6?

Accepted Answer

A) 92.53% 
B) 86.65% 
C) 49.47% 
D) 7.47% 
E) 6.015% 
A) 92.53% 
B) 86.65% 
C) 49.47% 
D) 7.47% 
E) 6.015%

Question 5

Determine the number of protons and identify the correct symbol for an atom with 20 neutrons and 20 electrons.

Accepted Answer

A) 20 protons,   
B) 20 protons,   
C) 20 protons,   
D) 40 protons,   
E) 40 protons,   
A) 20 protons,   
B) 20 protons,   
C) 20 protons,   
D) 40 protons,   
E) 40 protons,

Question 6

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 7

Give the number of protons (p),electrons (e),and neutrons (n)in one atom of chlorine- 37.

Accepted Answer

A) 37 p,37 e,17 n 
B) 17 p,17 e,37 n 
C) 17 p,17 e,20 n 
D) 37 p,17 e,20 n 
E) 17 p,37 e,17 n 
A) 37 p,37 e,17 n 
B) 17 p,17 e,37 n 
C) 17 p,17 e,20 n 
D) 37 p,17 e,20 n 
E) 17 p,37 e,17 n

Question 8

What element is represented by X in the atomic symbol notation   ?

Accepted Answer

A) Iridium 
B) Platinum 
C) Palladium 
D) Selenium 
E) Magnesium 
A) Iridium 
B) Platinum 
C) Palladium 
D) Selenium 
E) Magnesium

Question 9

Which of the following is a metal?

Accepted Answer

A) Nitrogen,N,Z = 7 
B) Phosphorus,P,Z = 15 
C) Arsenic,As,Z = 33 
D) Thallium,Tl,Z = 81 
E) Silicon,Si,Z = 14 
A) Nitrogen,N,Z = 7 
B) Phosphorus,P,Z = 15 
C) Arsenic,As,Z = 33 
D) Thallium,Tl,Z = 81 
E) Silicon,Si,Z = 14

Question 10

Which pair of elements would be most likely to form an ionic compound?

Accepted Answer

A) P and Br 
B) Zn and K 
C) F and Al 
D) C and S 
E) Al and Rb 
A) P and Br 
B) Zn and K 
C) F and Al 
D) C and S 
E) Al and Rb

Question 11

What terms defines a mass which is exactly equal to 1/12 the mass of one carbon-12 atom?

Accepted Answer

A) Isotope number 
B) Mass number 
C) Mass-to-charge ratio 
D) Atomic number 
E) Atomic mass unit 
A) Isotope number 
B) Mass number 
C) Mass-to-charge ratio 
D) Atomic number 
E) Atomic mass unit

Question 12

The chemical formula for iron(II)nitrate is

Accepted Answer

A) Fe2(NO3)3. 
B) Ir(NO2)2. 
C) Fe2N3. 
D) Fe(NO3)2. 
E) Fe(NO2)2. 
A) Fe2(NO3)3. 
B) Ir(NO2)2. 
C) Fe2N3. 
D) Fe(NO3)2. 
E) Fe(NO2)2.

Question 13

Determine the number of protons,electrons,and neutrons for the isotope gold-118.The symbol for gold is Au.

Accepted Answer

A) 118 protons,118 electrons,79 neutrons 
B) 79 protons,79 electrons,118 neutrons 
C) 79 protons,79 electrons,39 neutrons 
D) 118 protons,118 electrons,39 neutrons 
E) 79 protons,39 electrons,118 neutrons 
A) 118 protons,118 electrons,79 neutrons 
B) 79 protons,79 electrons,118 neutrons 
C) 79 protons,79 electrons,39 neutrons 
D) 118 protons,118 electrons,39 neutrons 
E) 79 protons,39 electrons,118 neutrons

Question 14

What is the formula for lead(II)oxide?

Accepted Answer

A) PbO 
B) PbO2 
C) Pb2O 
D) PbO4 
E) Pb2O3 
A) PbO 
B) PbO2 
C) Pb2O 
D) PbO4 
E) Pb2O3

Question 15

The mass of a neutron is equal to the mass of a proton plus the mass of an electron.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is an ionic compound?

Accepted Answer

A) H2S 
B) NH3 
C) I2 
D) KI 
E) CCl4 
A) H2S 
B) NH3 
C) I2 
D) KI 
E) CCl4

Question 17

Which of these elements is most likely to be a good conductor of electricity?

Accepted Answer

A) N 
B) S 
C) He 
D) Cl 
E) Fe 
A) N 
B) S 
C) He 
D) Cl 
E) Fe

Question 18

Determine the number of electrons and identify the correct symbol for an atom with 17 protons and 18 neutrons.

Accepted Answer

A) 17 electrons,   
B) 18 electrons,   
C) 17 electrons,   
D) 17 electrons,   
E) 18 electrons,   
A) 17 electrons,   
B) 18 electrons,   
C) 17 electrons,   
D) 17 electrons,   
E) 18 electrons,

Question 19

Which of the following is the empirical formula for hexane,C6H14?

Accepted Answer

A) C12H28 
B) C6H14 
C) C3H7 
D) CH2.3 
E) C0.43H 
A) C12H28 
B) C6H14 
C) C3H7 
D) CH2.3 
E) C0.43H

Question 20

What is the name of Ba(NO2)2·3H2O?

Accepted Answer

A) barium nitrite 
B) trihydrobarium(II)nitrite 
C) barium nitrite trihydrate 
D) barium(II)nitrite trihydrate 
E) barium nitrate trihydrate 
A) barium nitrite 
B) trihydrobarium(II)nitrite 
C) barium nitrite trihydrate 
D) barium(II)nitrite trihydrate 
E) barium nitrate trihydrate

Exam 2: Atoms Molecules and Ions

The elements in Group 8A are called the ________.

The alkali metal elements are found in _______ of the periodic table.

The elements in a column of the periodic table are known as

Determine the number of protons and identify the correct symbol for an atom with 20 neutrons and 20 electrons.

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

Give the number of protons (p),electrons (e),and neutrons (n)in one atom of chlorine- 37.

What element is represented by X in the atomic symbol notation ?

Which of the following is a metal?

Which pair of elements would be most likely to form an ionic compound?

What terms defines a mass which is exactly equal to 1/12 the mass of one carbon-12 atom?

The chemical formula for iron(II)nitrate is

Determine the number of protons,electrons,and neutrons for the isotope gold-118.The symbol for gold is Au.

What is the formula for lead(II)oxide?

The mass of a neutron is equal to the mass of a proton plus the mass of an electron.

Which of the following is an ionic compound?

Which of these elements is most likely to be a good conductor of electricity?

Determine the number of electrons and identify the correct symbol for an atom with 17 protons and 18 neutrons.

Which of the following is the empirical formula for hexane,C6H14?

What is the name of Ba(NO2)2·3H2O?

Chemistry: the Central Science

Stoichiometry Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I Basic Concepts

Chemical Bonding Ii Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

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

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

Which of the following is the empirical formula for hexane,C₆H₁₄?

What is the name of Ba(NO₂)₂·3H₂O?