Question 1

Give the formula for the compound, used as a filler in laundry detergents, formed between sodium and sulfate (SO?42-) ions.

Accepted Answer

A) Na2SO4 
B) Na(SO4)2 
C) Na(SO4)3 d Na2(SO4)3 (a 
A) Na2SO4 
B) Na(SO4)2 
C) Na(SO4)3 d Na2(SO4)3 (a A

Question 2

The meaning of a chemical mole is

Accepted Answer

A) a dozen or so particles 
B)  a specific number of particles, 6.022 x 1023, to be exact 
C) a variable number, usually estimated to be about 1,000,000 
D) the number of particles in the carbon atom's nucleus 
A) a dozen or so particles 
B)  a specific number of particles, 6.022 x 1023, to be exact 
C) a variable number, usually estimated to be about 1,000,000 
D) the number of particles in the carbon atom's nucleus B

Question 3

Identify the polyatomic ion.

Accepted Answer

A) (PO4)3- used in some detergents and a possible water pollution problem 
B) SO2 a serious air pollution problem 
C) H2O 
D) CH4 - the main constituent of the fuel natural gas 
A) (PO4)3- used in some detergents and a possible water pollution problem 
B) SO2 a serious air pollution problem 
C) H2O 
D) CH4 - the main constituent of the fuel natural gas A

Question 4

State the lowest whole-number coefficients in order for the following equation, when balanced.
C + S8 → CS2

Accepted Answer

A) 4,1,4 
B) 1,1,1 
C) 2,4,8 
D) 5,2,1 
A) 4,1,4 
B) 1,1,1 
C) 2,4,8 
D) 5,2,1

Question 5

Ionic bonding, such as in table salt, is due to

Accepted Answer

A) electron sharing 
B) electron transfer 
C) proton sharing 
D) neutron transfer 
A) electron sharing 
B) electron transfer 
C) proton sharing 
D) neutron transfer

Question 6

Marie and Pierre Curie discovered

Accepted Answer

A) the carbon cycle 
B) two new radioactive elements 
C) the steam engine 
D) organic farming 
A) the carbon cycle 
B) two new radioactive elements 
C) the steam engine 
D) organic farming

Question 7

Oxidation numbers are

Accepted Answer

A) the charges on ions 
B) the masses of ions 
C) the masses of electrons 
D) the densities of ions 
A) the charges on ions 
B) the masses of ions 
C) the masses of electrons 
D) the densities of ions

Question 8

Looking at the Periodic Table, one can determine the number of valence electrons of Group 17 elements (on the far right, going down from F to At) to be

Accepted Answer

A) 1 
B) 3 
C) 7 
D) 9 
A) 1 
B) 3 
C) 7 
D) 9

Question 9

Which is true of the electron?

Accepted Answer

A) Mass of one amu, charge of -1 
B) Mass of one amu, charge of +1 
C) Mass of almost zero, charge of +1 
D) Mass of almost zero, charge of -1 
A) Mass of one amu, charge of -1 
B) Mass of one amu, charge of +1 
C) Mass of almost zero, charge of +1 
D) Mass of almost zero, charge of -1

Question 10

Give the formula for the compound (a salt substitute) made between potassium (K) and chlorine (Cl).

Accepted Answer

A) KCl2 
B) K2Cl 
C) KCl 
D) K2Cl3 
A) KCl2 
B) K2Cl 
C) KCl 
D) K2Cl3

Question 11

Charged particles formed due to electron transfer are known as

Accepted Answer

A) atoms 
B) ions 
C) neutrinos 
D) quarks 
A) atoms 
B) ions 
C) neutrinos 
D) quarks

Question 12

Fractional atomic weights on the periodic table are due to

Accepted Answer

A) experimental error 
B) random statistical variance 
C) the presence of isotopes of the various elements 
D) the property of the atom to break into smaller particles 
A) experimental error 
B) random statistical variance 
C) the presence of isotopes of the various elements 
D) the property of the atom to break into smaller particles

Question 13

Dalton's Atomic Theory stated the following.

Accepted Answer

A) Elements are composed of small, indivisible particles called atoms. 
B) The atoms of a given element are similar in all respects. 
C) The atoms of one element are different from the atoms of all other elements. 
D) Chemical compounds are formed when the atoms of two or more elements come together to form molecules. 
E) All of these 
A) Elements are composed of small, indivisible particles called atoms. 
B) The atoms of a given element are similar in all respects. 
C) The atoms of one element are different from the atoms of all other elements. 
D) Chemical compounds are formed when the atoms of two or more elements come together to form molecules. 
E) All of these

Question 14

Atoms tend to react to achieve an outer electron number of

Accepted Answer

A) 1 
B) 4 
C) 8 
D) 16 
A) 1 
B) 4 
C) 8 
D) 16

Question 15

Which is true of neutrons?

Accepted Answer

A) mass of one amu, charge of zero 
B) mass of two amu, charge of zero 
C) mass of almost zero, charge of +1 
D) mass of one amu, charge of +1 
A) mass of one amu, charge of zero 
B) mass of two amu, charge of zero 
C) mass of almost zero, charge of +1 
D) mass of one amu, charge of +1

Question 16

Isotopes, sometimes used in medical diagnoses, are different forms of the same element, having

Accepted Answer

A) the same atomic number but a different number of electrons 
B) the same atomic mass but a different number of protons 
C) the same atomic number but a different number of neutrons 
D) the same number of alpha particles 
A) the same atomic number but a different number of electrons 
B) the same atomic mass but a different number of protons 
C) the same atomic number but a different number of neutrons 
D) the same number of alpha particles

Question 17

Chemical bonding occurs due to the atom's

Accepted Answer

A) nucleus 
B) core or inner electrons 
C) valence or outer electrons 
D) neutrons 
A) nucleus 
B) core or inner electrons 
C) valence or outer electrons 
D) neutrons

Question 18

If the atomic nucleus were the size of a baseball, the outer edge of the atom would be

Accepted Answer

A) about an inch from the nucleus 
B) about a nanometer from the nucleus 
C) about a centimeter from the nucleus 
D) over two miles from the nucleus 
A) about an inch from the nucleus 
B) about a nanometer from the nucleus 
C) about a centimeter from the nucleus 
D) over two miles from the nucleus

Question 19

Give the formula for the compound (aka limestone) formed between calcium (Ca) and carbonate (CO3)2- ions.

Accepted Answer

A) Ca2CO3 
B) CaCO3 
C) Ca2(CO3)4 
D) Ca(CO3)2 
A) Ca2CO3 
B) CaCO3 
C) Ca2(CO3)4 
D) Ca(CO3)2

Question 20

Looking at the Periodic Table, one can determine the number of valence electrons of Group I elements (on the far left, going down from H to Fr) to be

Accepted Answer

A) 1 
B) 3 
C) 7 
D) 8 
A) 1 
B) 3 
C) 7 
D) 8

Give the formula for the compound, used as a filler in laundry detergents, formed between sodium and sulfate (SO_?4^2-) ions.

The meaning of a chemical mole is

Identify the polyatomic ion.

State the lowest whole-number coefficients in order for the following equation, when balanced. C + S₈ → CS₂

Ionic bonding, such as in table salt, is due to

Marie and Pierre Curie discovered

Oxidation numbers are

Looking at the Periodic Table, one can determine the number of valence electrons of Group 17 elements (on the far right, going down from F to At) to be

Which is true of the electron?

Give the formula for the compound (a salt substitute) made between potassium (K) and chlorine (Cl).

Charged particles formed due to electron transfer are known as

Fractional atomic weights on the periodic table are due to

Dalton's Atomic Theory stated the following.

Atoms tend to react to achieve an outer electron number of

Which is true of neutrons?

Isotopes, sometimes used in medical diagnoses, are different forms of the same element, having

Chemical bonding occurs due to the atom's

If the atomic nucleus were the size of a baseball, the outer edge of the atom would be

Give the formula for the compound (aka limestone) formed between calcium (Ca) and carbonate (CO₃)^2- ions.

Looking at the Periodic Table, one can determine the number of valence electrons of Group I elements (on the far left, going down from H to Fr) to be

Background to the Environmental Problem

The Natural Laws

Types of Chemical Compounds and Their Reactions

Element Cycles

Toxicology

Energy and Modern Society

Emerging Energy Sources

Weather and Climate

Air Quality

Air Inside

Global Atmospheric Change

Water

Water Quality

Solid Wastes

Hazardous Wastes

Filters

Exam 3: Underlying Principles of Chemistry

Give the formula for the compound, used as a filler in laundry detergents, formed between sodium and sulfate (SO?42-) ions.

The meaning of a chemical mole is

Identify the polyatomic ion.

State the lowest whole-number coefficients in order for the following equation, when balanced. C + S8 → CS2

Ionic bonding, such as in table salt, is due to

Marie and Pierre Curie discovered

Oxidation numbers are

Looking at the Periodic Table, one can determine the number of valence electrons of Group 17 elements (on the far right, going down from F to At) to be

Which is true of the electron?

Give the formula for the compound (a salt substitute) made between potassium (K) and chlorine (Cl).

Charged particles formed due to electron transfer are known as

Fractional atomic weights on the periodic table are due to

Dalton's Atomic Theory stated the following.

Atoms tend to react to achieve an outer electron number of

Which is true of neutrons?

Isotopes, sometimes used in medical diagnoses, are different forms of the same element, having

Chemical bonding occurs due to the atom's

If the atomic nucleus were the size of a baseball, the outer edge of the atom would be

Give the formula for the compound (aka limestone) formed between calcium (Ca) and carbonate (CO3)2- ions.

Looking at the Periodic Table, one can determine the number of valence electrons of Group I elements (on the far left, going down from H to Fr) to be

Background to the Environmental Problem

The Natural Laws

Types of Chemical Compounds and Their Reactions

Element Cycles

Toxicology

Energy and Modern Society

Emerging Energy Sources

Weather and Climate

Air Quality

Air Inside

Global Atmospheric Change

Water

Water Quality

Solid Wastes

Hazardous Wastes

Filters

Give the formula for the compound, used as a filler in laundry detergents, formed between sodium and sulfate (SO_?4^2-) ions.

State the lowest whole-number coefficients in order for the following equation, when balanced. C + S₈ → CS₂

Give the formula for the compound (aka limestone) formed between calcium (Ca) and carbonate (CO₃)^2- ions.