Deck 3: Chemicals and Compounds

Question 1

Calcium has three valence electrons.

Answer 1

False

Question 2

Chlorine has five valence electrons.

Answer 2

False

Question 3

Nitrogen has five valence electrons.

Answer 3

True

Question 4

Sodium vigorously reacts with water to produce hydrogen gas.

Question 5

Aluminum vigorously reacts with water to produce hydrogen gas.

Question 6

Iodine is found column 17 of the modern periodic table.

Question 7

There are a maximum of six electrons in the second quantum shell.

Question 8

The maximum number of electrons in quantum shells one through three is 36.

Question 9

The maximum number of electrons in quantum shells one through three is 18.

Question 10

Valence electrons are ___.

A) the outermost quantum shell of an atom
B) the electrons contained in an atom's valence shell
C) notations that show only the valence electrons of an atom
D) All of the above.
E) None of the above.

Question 11

Valence shells are ___.

A) the outermost quantum shell of an atom
B) the electrons contained in an atom's valence shell
C) notations that show only the valence electrons of an atom
D) All of the above.
E) None of the above.

Question 12

Lewis structures are ___.

A) the outermost quantum shell of an atom
B) the electrons contained in an atom's valence shell
C) notations that show only the valence electrons of an atom
D) notations that show all the electrons of an atom
E) None of the above.

Question 13

The number of valence electrons for carbon is ___.

A) 2
B) 3
C) 4
D) 5
E) 6

Question 14

The number of valence electrons for polonium is ___.

A) 2
B) 3
C) 4
D) 5
E) 6

Question 15

The first quantum shell holds a maximum of ___ electrons.

A) 2
B) 8
C) 10
D) 18

Question 16

The first and second quantum shell holds a maximum total of ___ electrons.

A) 2
B) 8
C) 10
D) 18

Question 17

Chlorine's electronic configuration for quantum shells 1, 2, and three are ___, ____, and ____, respectively.

A) 2, 8, 8
B) 2, 7, 8
C) 2, 8, 6
D) 2, 8, 7
E) None of the above.

Question 18

Sulfur's electronic configuration for quantum shells 1, 2, and three are ___, ____, and ____, respectively.

A) 2, 8, 8
B) 2, 7, 8
C) 2, 8, 6
D) 2, 8, 7
E) None of the above.

Question 19

In the compound NaCl, the sodium atom donates ____ electron(s) to the chlorine atom so that the chlorine atom can have an octet.

A) one
B) two
C) three
D) four
E) None of the above.

Question 20

In the compound MgO, the magnesium atom donates ____ electron(s) to the oxygen atom so that the oxygen atom can have an octet.

A) one
B) two
C) three
D) four
E) None of the above.

Question 21

In the compound AlN, the aluminum atom donates ____ electron(s) to the nitrogen atom so that the nitrogen atom can have an octet.

A) one
B) two
C) three
D) four
E) None of the above.

Question 22

The following compound is a(n) _____compound: CH₄

A) polar covalent
B) nonpolar covalent
C) ionic
D) All of the above.
E) None of the above.

Question 23

The following compound is a(n) _____compound: SiH₄

A) polar covalent
B) nonpolar covalent
C) ionic
D) All of the above.
E) None of the above.

Question 24

The following compound is a(n) _____compound: H₂

A) polar covalent
B) nonpolar covalent
C) ionic
D) All of the above.
E) None of the above.

Question 25

The following compound is a(n) _____compound: MgCl₂

A) polar covalent
B) nonpolar covalent
C) ionic
D) All of the above.
E) None of the above.

Question 26

The following compound is a(n) _____compound: MnO₂

A) polar covalent
B) nonpolar covalent
C) ionic
D) All of the above.
E) None of the above.

Question 27

Select the definition for a compound.

A) A pure substance formed by the chemical combination of two or more elements in a specific ratio.
B) A chemical bond resulting from the mutual attraction of oppositely charged ions.
C) An electrically neutral assembly of atoms held together by covalent bonds.
D) A bond consisting of a pair of electrons shared by two atoms.
E) None of the above.

Question 28

Select the definition for an ionic bond.

A) A pure substance formed by the chemical combination of two or more elements in a specific ratio.
B) A chemical bond resulting from the mutual attraction of oppositely charged ions.
C) An electrically neutral assembly of atoms held together by covalent bonds.
D) A bond consisting of a pair of electrons shared by two atoms.
E) None of the above.

Question 29

Select the definition for a covalent bond.

A) A pure substance formed by the chemical combination of two or more elements in a specific ratio.
B) A chemical bond resulting from the mutual attraction of oppositely charged ions.
C) An electrically neutral assembly of atoms held together by covalent bonds.
D) A bond consisting of a pair of electrons shared by two atoms.
E) None of the above.

Question 30

Select the definition for a molecule.

A) A pure substance formed by the chemical combination of two or more elements in a specific ratio.
B) A chemical bond resulting from the mutual attraction of oppositely charged ions.
C) An electrically neutral assembly of atoms held together by covalent bonds.
D) A bond consisting of a pair of electrons shared by two atoms.
E) None of the above.

Question 31

The two atoms in Cl₂ are joined together by an ionic bond.

Question 32

The two atoms in O₂ are joined together by a covalent bond.

Question 33

In the compound CH₃Cl, the C atom has an electronegativity of 2.5 while the Cl atom has an electronegativity of 2.9. Given this information, the differences in the electronegativity for the C and Cl atom will result in the C-Cl bond being nonpolar covalent.

Question 34

In the compound H₂O, the H atom has an electronegativity of 2.1 while the O atom has an electronegativity of 3.5. Given this information, the differences in the electronegativity for the H and O atom will result in the H-O bond being polar covalent.

Question 35

In the compound CH₃Cl, the C atom has an electronegativity of 2.5 while the H atom has an electronegativity of 2.1. Given this information, the differences in the electronegativity for the C and H atom will result in the C-H bond being nonpolar covalent.

Question 36

Water can undergo ionization to the hydrogen cation and the hydroxide cation.

Question 37

NaCl is an example of an electrolyte.

Question 38

Ionic compounds have low boiling points.

Question 39

The name for MgI₂ is magnesium iodide.

Question 40

The name for CaF₂ is calcium difluoride.

Question 41

The formula sodium iodide is NaI₂.

Question 42

The formula calcium chloride is CaCl₂.

Question 43

The formula calcium oxide is CaO₂.

Question 44

The formula magnesium sulfide is MgS.

Question 45

The formula for potassium nitride is K₃N.

Question 46

The formula for aluminum oxide is Al₂O₂.

Question 47

The formula for aluminum sulfide is Al₂S₃.

Question 48

The formula mass for Al₂O₃ is 101.96 amu.

Question 49

____ Atom(s) of aluminum will combine with _____atom(s) of chlorine to make aluminum chloride.

A) 1,3
B) 3,1
C) 1,1
D) 2,1
E) 1,2

Question 50

____ Atom(s) of barium will combine with _____atom(s) of oxygen to make barium oxide.

A) 1,3
B) 3,1
C) 1,1
D) 2,1
E) 1,2

Question 51

____ Atom(s) of strontium will combine with _____atom(s) of sulfur to make barium oxide.

A) 1,3
B) 3,1
C) 1,1
D) 2,1
E) 1,2

Question 52

____ Atom(s) of rubidium will combine with _____atom(s) of nitrogen to make rubidium nitride.

A) 1,3
B) 3,1
C) 1,1
D) 2,1
E) 1,2

Question 53

____ Atom(s) of rubidium will combine with _____atom(s) of sulfur to make rubidium sulfide.

A) 1,3
B) 3,1
C) 1,1
D) 2,1
E) 1,2

Question 54

____ Atom(s) of aluminum will combine with _____atom(s) of bromine to make aluminum bromide.

A) 1,3
B) 3,1
C) 1,1
D) 2,1
E) 1,2

Question 55

____ Atom(s) of lithium will combine with _____atom(s) of fluoride to make lithium fluoride.

A) 1,3
B) 3,1
C) 1,1
D) 2,1
E) 1,2

Question 56

Which of the following has the greatest formula mass?

A) Sodium chloride
B) Potassium bromide
C) Cesium iodide
D) Cesium bromide
E) They all have the same formula mass.

Question 57

Which of the following has the least formula mass?

A) Sodium chloride
B) Potassium bromide
C) Cesium iodide
D) Cesium bromide
E) They all have the same formula mass.

Question 58

Which of the following has the formula mass 212.8 amu?

A) Sodium chloride
B) Potassium bromide
C) Cesium iodide
D) Cesium bromide
E) They all have the same formula mass.

Question 59

The total number of electrons in the covalent bonds of CH₄ is ____.

A) 4
B) 6
C) 8
D) 12
E) None of the above.

Question 60

The total number of electrons in the covalent bonds of SH₂ is ____.

A) 4
B) 6
C) 8
D) 12
E) None of the above.

Question 61

The total number of electrons in the covalent bonds of H₂O is ____.

A) 4
B) 6
C) 8
D) 12
E) None of the above.

Question 62

The total number of electrons in the covalent bonds of SO₄^2- is ____.

A) 4
B) 6
C) 8
D) 12
E) None of the above.

Question 63

The total number of electrons in the covalent bonds of CO₂ is ____.

A) 4
B) 6
C) 8
D) 12
E) None of the above.

Question 64

The total number of electrons in the covalent bonds of CO is ____.

A) 4
B) 6
C) 8
D) 12
E) None of the above.

Question 65

The formula for the bicarbonate ion is ___.

A) HCO₃^-
B) OH^-
C) NH₄⁺
D) PO₄^3-
E) None of the above.

Question 66

Covalent compounds exists as discrete molecular units.

Question 67

Ionic compounds exists as discrete molecular units.

Question 68

Ionic compounds exists as an ordered array of ions that extends out into space.

Question 69

Water (H₂O) has the bent shape.

Question 70

NH₃ has the bent shape.

Question 71

NH₃ has the pyramidal shape.

Question 72

CH₄ has the tetrahedral shape.

Question 73

Ammonia is the common name for NH₄⁺.

Question 74

Ammonia is the common name for NH₃.

Question 75

Methane is the common name for CH₄.

Question 76

There are ___ carbon atoms in 2-methylpropane.

A) 3
B) 4
C) 5
D) 6
E) 8

Question 77

There are ___ carbon atoms in 2-methylbutane.

A) 3
B) 4
C) 5
D) 6
E) 8

Question 78

There are ___ carbon atoms in 3-methylheptane.

A) 3
B) 4
C) 5
D) 6
E) 8

Question 79

There are ___ carbon atoms in 2,2,4-trimethylpentane.

A) 3
B) 4
C) 5
D) 6
E) 8

Question 80

There are ___ carbon atoms in 2,2-dimethylhexane.

A) 3
B) 4
C) 5
D) 6
E) 8