Question 1

Ionic compounds in the solid state

Accepted Answer

A) always consist of molecules. 
B) sometimes consist of molecules. 
C) never consist of molecules. 
D) never occur as crystals. 
A) always consist of molecules. 
B) sometimes consist of molecules. 
C) never consist of molecules. 
D) never occur as crystals.

Question 2

Which of the following is a heterogeneous mixture?

Accepted Answer

A) seawater 
B) salt 
C) soil 
D) gasoline 
A) seawater 
B) salt 
C) soil 
D) gasoline

Question 3

A compound whose name ends in -ate always contains

Accepted Answer

A) hydrogen. 
B) oxygen. 
C) one or more hydroxide groups. 
D) only two elements. 
A) hydrogen. 
B) oxygen. 
C) one or more hydroxide groups. 
D) only two elements.

Question 4

The charge on halogen ions is

Accepted Answer

A) +1. 
B) +2. 
C) -1. 
D) -2. 
A) +1. 
B) +2. 
C) -1. 
D) -2.

Question 5

An atom whose outer electron shell lacks one electron from being filled is

Accepted Answer

A) a halogen. 
B) an active metal. 
C) an inactive metal. 
D) an inert gas. 
A) a halogen. 
B) an active metal. 
C) an inactive metal. 
D) an inert gas.

Question 6

The missing number in the equation 2Ca(NO3)2 $\rarr$ 2CaO + [ ]NO2 + O2 is

Accepted Answer

A) 1. 
B) 2. 
C) 3. 
D) 4. 
A) 1. 
B) 2. 
C) 3. 
D) 4.

Question 7

The statement that the elements in a given compound are always combined in the same proportions by mass is known as

Accepted Answer

A) the periodic law. 
B) the law of definite proportions. 
C) the law of conservation of mass. 
D) Dalton's law. 
A) the periodic law. 
B) the law of definite proportions. 
C) the law of conservation of mass. 
D) Dalton's law.

Question 8

The number of oxygen atoms in a molecule of aluminum sulfate, Al2(SO4)3, is

Accepted Answer

A) 3. 
B) 4. 
C) 7. 
D) 12. 
A) 3. 
B) 4. 
C) 7. 
D) 12.

Question 9

A family of elements whose atoms react by picking up electrons is the

Accepted Answer

A) alkali metals. 
B) halogens. 
C) transition metals. 
D) inert gases. 
A) alkali metals. 
B) halogens. 
C) transition metals. 
D) inert gases.

Question 10

The missing number in the equation 4NH3 + [ ]O2 $\rarr$ 4NO + 6H2O is

Accepted Answer

A) 1. 
B) 2. 
C) 5. 
D) 10. 
A) 1. 
B) 2. 
C) 5. 
D) 10.

Question 11

The least active of the following metals is

Accepted Answer

A) silver. 
B) potassium. 
C) zinc. 
D) copper. 
A) silver. 
B) potassium. 
C) zinc. 
D) copper.

Question 12

The charge on alkali metal ions is

Accepted Answer

A) +1. 
B) +2. 
C) -1. 
D) -2. 
A) +1. 
B) +2. 
C) -1. 
D) -2.

Question 13

The chromate ion has the formula CrO42-.The formula of tin(I) chromate is

Accepted Answer

A) SnCrO4. 
B) Sn2CrO4. 
C) Sn(CrO4)2. 
D) Sn2(CrO4)2. 
A) SnCrO4. 
B) Sn2CrO4. 
C) Sn(CrO4)2. 
D) Sn2(CrO4)2.

Question 14

The most active of the following metals is

Accepted Answer

A) silver. 
B) potassium. 
C) zinc. 
D) copper. 
A) silver. 
B) potassium. 
C) zinc. 
D) copper.

Question 15

The rare earth elements are not

Accepted Answer

A) extremely rare in the earth's crust. 
B) found in ores in the United States. 
C) used in exceptionally strong magnets. 
D) used in certain lasers and other light sources. 
A) extremely rare in the earth's crust. 
B) found in ores in the United States. 
C) used in exceptionally strong magnets. 
D) used in certain lasers and other light sources.

Question 16

Each horizontal row of the periodic table includes elements with chemical characteristics that are, in general,

Accepted Answer

A) identical. 
B) similar. 
C) different. 
D) sometimes similar and sometimes different. 
A) identical. 
B) similar. 
C) different. 
D) sometimes similar and sometimes different.

Ionic compounds in the solid state

Which of the following is a heterogeneous mixture?

A compound whose name ends in -ate always contains

The charge on halogen ions is

An atom whose outer electron shell lacks one electron from being filled is

The missing number in the equation 2Ca(NO₃)₂ $\rarr$ 2CaO + [ ]NO₂ + O₂ is

The statement that the elements in a given compound are always combined in the same proportions by mass is known as

The number of oxygen atoms in a molecule of aluminum sulfate, Al₂(SO₄)₃, is

A family of elements whose atoms react by picking up electrons is the

The missing number in the equation 4NH₃ + [ ]O₂ $\rarr$ 4NO + 6H₂O is

The least active of the following metals is

The charge on alkali metal ions is

The chromate ion has the formula CrO₄^2-.The formula of tin(I) chromate is

The most active of the following metals is

The rare earth elements are not

Each horizontal row of the periodic table includes elements with chemical characteristics that are, in general,

The Scientific Method

Motion

Energy

Energy and the Future

Matter and Heat

Electricity and Magnetism

Waves

The Nucleus

The Atom

Crystals, Ions, and Solutions

Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

The Solar System

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Exam 10: The Periodic Law

Ionic compounds in the solid state

Which of the following is a heterogeneous mixture?

A compound whose name ends in -ate always contains

The charge on halogen ions is

An atom whose outer electron shell lacks one electron from being filled is

The missing number in the equation 2Ca(NO3)2 →\rarr→ 2CaO + [ ]NO2 + O2 is

The statement that the elements in a given compound are always combined in the same proportions by mass is known as

The number of oxygen atoms in a molecule of aluminum sulfate, Al2(SO4)3, is

A family of elements whose atoms react by picking up electrons is the

The missing number in the equation 4NH3 + [ ]O2 →\rarr→ 4NO + 6H2O is

The least active of the following metals is

The charge on alkali metal ions is

The chromate ion has the formula CrO42-.The formula of tin(I) chromate is

The most active of the following metals is

The rare earth elements are not

Each horizontal row of the periodic table includes elements with chemical characteristics that are, in general,

The Scientific Method

Motion

Energy

Energy and the Future

Matter and Heat

Electricity and Magnetism

Waves

The Nucleus

The Atom

Crystals, Ions, and Solutions

Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

The Solar System

The Stars

The Universe

Filters

The missing number in the equation 2Ca(NO₃)₂ $\rarr$ 2CaO + [ ]NO₂ + O₂ is

The number of oxygen atoms in a molecule of aluminum sulfate, Al₂(SO₄)₃, is

The missing number in the equation 4NH₃ + [ ]O₂ $\rarr$ 4NO + 6H₂O is

The chromate ion has the formula CrO₄^2-.The formula of tin(I) chromate is