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SJI 9 SCIENCE 2Q EXAM REVIEW

Total questions: 213

Worksheet time: 2hrs 52mins

Name
Class
Date
1.

What does the Lewis Dot Diagram represent?

a)

Number of protons in an atom

b)

Number of neutrons in an atom

c)

Valence electrons of an element

d)

Total electrons in an atom

2.

Who devised the Lewis Electron Dot Structure?

a)

Dmitri Mendeleev

b)

Gilbert Lewis

c)

John Dalton

d)

Niels Bohr

3.

What are valence electrons?

a)

Electrons in the nucleus

b)

Electrons in the outermost shell

c)

Electrons that are lost during bonding

d)

Electrons that do not participate in bonding

4.

According to the Octet Rule, how many electrons are needed in the outer shell for stability?

a)

Two

b)

Four

c)

Six

d)

Eight

5.

What is the term for a positively-charged ion?

a)

Anion

b)

Cation

c)

Electron

d)

Proton

6.

What type of bond involves the complete transfer of valence electrons?

a)

Covalent Bonding

b)

Metallic Bonding

c)

Ionic Bonding

d)

Hydrogen Bonding

7.

What does electronegativity measure?

a)

An atom's size

b)

An atom's weight

c)

An atom's ability to attract electrons in a bond

d)

An atom's energy levels

8.

What happens to the electron affinity as you move across a period from left to right?

a)

It decreases

b)

It increases

c)

It remains the same

d)

It becomes unstable

9.

Which of the following statements is true about ionic compounds?

a)

They are typically gases at room temperature.

b)

They have low melting and boiling points.

c)

They are good conductors of electricity when dissolved in water.

d)

They consist of only neutral atoms.

10.

Which of the following is an example of an anion?

a)

Sodium (Na)

b)

Chloride (Cl⁻)

c)

Magnesium (Mg)

d)

Iron (Fe)

11.

How many valence electrons does beryllium have?

a)

One

b)

Two

c)

Three

d)

Four

12.

What do you call the attractive force between oppositely charged ions?

a)

Electromagnetic force

b)

Electrostatic force

c)

Gravitational force

d)

Nuclear force

13.

In covalent bonding, how do atoms achieve stability?

a)

By losing electrons

b)

By sharing electrons

c)

By gaining protons

d)

By forming cations

14.

What is the primary difference between electron affinity and electronegativity?

a)

Electron affinity is about free electrons; electronegativity is about bonded atoms.

b)

Electron affinity measures ion formation; electronegativity measures bond strength.

c)

Electron affinity is about nuclear charge; electronegativity is about electron shell stability.

d)

Electron affinity and electronegativity are the same.

15.

Which of the following elements is most likely to form an ionic bond with chlorine?

a)

Argon

b)

Sodium

c)

Helium

d)

Carbon

16.

What is the number of valence electrons in Lithium (Li)?

a)

1

b)

2

c)

3

d)

0

17.

How many valence electrons does Fluorine (F) have?

a)

6

b)

7

c)

8

d)

1

18.

What ion is formed when Lithium (Li) loses an electron?

a)

Li⁻

b)

Li

c)

Li⁺

d)

Li²⁺

19.

What ion does Fluorine (F) become when it gains an electron?

a)

F

b)

F⁺

c)

F²⁻

d)

F⁻

20.

In the ionic bond between Silver (Ag) and Chlorine (Cl), what is the number of valence electrons in Ag?

a)

1

b)

2

c)

3

d)

7

21.

When Chlorine (Cl) gains an electron, what ion does it form?

a)

Cl⁺

b)

Cl

c)

Cl²⁻

d)

Cl⁻

22.

What happens to Potassium (K) during ionic bonding with Bromine (Br)?

a)

K gains 1 electron

b)

K loses 1 electron

c)

K shares 1 electron

d)

K remains neutral

23.

What type of ion does Bromine (Br) form after gaining an electron?

a)

Br⁺

b)

Br

c)

Br²⁻

d)

Br⁻

24.

What is the resulting ion when Sodium (Na) loses its single valence electron?

a)

Na

b)

Na⁻

c)

Na²⁺

d)

Na⁺

25.

How many valence electrons does Cesium (Cs) have?

a)

1

b)

2

c)

3

d)

7

26.

What is the charge of the ion formed by Fluorine (F) when it gains an electron?

a)

F

b)

F⁺

c)

F²⁻

d)

F⁻

27.

Which of the following statements is true about the bonding between Li and F?

a)

Li gains an electron from F

b)

F loses an electron to Li

c)

Li loses an electron to F

d)

Both atoms share electrons

28.

Which ion is formed when Chlorine (Cl) gains an electron from Sodium (Na)?

a)

Cl

b)

Cl⁻

c)

Cl²⁻

d)

Cl⁺

29.

When Cs and F bond ionically, what happens to Cesium (Cs)?

a)

Cs loses 1 electron

b)

Cs gains 1 electron

c)

Cs shares 1 electron

d)

Cs remains neutral

30.

What is the name of the compound Li₂S?

a)

Lithium Sulfide

b)

Lithium Sulfate

c)

Sulfur Lithium

d)

Sulfide Lithium

31.

What is the name of the compound SnBr₂?

a)

Tin(II) Bromide

b)

Tin Bromide

c)

Tin(IV) Bromide

d)

Bromine Tin

32.

What is the name of the compound HF(g)?

a)

Hydrogen Fluoride

b)

Fluorine Hydride

c)

Hydrofluoric Acid

d)

Fluoric Acid

33.

What is the name of the compound P₂O₅?

a)

Phosphorus Pentoxide

b)

Phosphorus Dioxide

c)

Diphosphorus Oxide

d)

Phosphoric Anhydride

34.

What is the name of the compound HI(aq)?

a)

Hydroiodic Acid

b)

Iodine Hydride

c)

Iodic Acid

d)

Hydriodic Acid

35.

What is the name of the compound AuO?

a)

Gold(I) Oxide

b)

Gold Oxide

c)

Auric Oxide

d)

Gold(II) Oxide

36.

What is the name of the compound CCl₄?

a)

Carbon Tetrachloride

b)

Carbon Chloride

c)

Tetrachlorocarbon

d)

Chlorinated Carbon

37.

What is the name of the compound CoI₂?

a)

Cobalt(I) Iodide

b)

Cobalt(II) Iodide

c)

Cobalt Iodide

d)

Iodide Cobalt

38.

What is the name of the compound CuCl₂?

a)

Copper(I) Chloride

b)

Copper(II) Chloride

c)

Copper Chloride

d)

Dichloride Copper

39.

What is the name of the compound Cs₃N?

a)

Cesium Nitride

b)

Cesium(I) Nitride

c)

Cesium Nitrate

d)

Tricesium Nitride

40.

What is the name of the compound AgBr?

a)

Silver Bromide

b)

Silver(I) Bromide

c)

Bromide Silver

d)

Silver Bromate

41.

What is the name of the compound Sn(ClO₃)₂?

a)

Tin(II) Chlorate

b)

Tin(IV) Chlorate

c)

Tin Chlorate

d)

Stannic Chlorate

42.

What is the name of the compound BaCr₂O₇?

a)

Barium Chromium Dioxide

b)

Barium Dichromate

c)

Barium Chromate

d)

Barium(II) Chromate

43.

What is the name of the compound (NH₄)₃PO₃?

a)

Ammonium Phosphate

b)

Ammonium Phosphite

c)

Triammonium Phosphate

d)

Ammonium Phosphoric Acid

44.

What is the chemical formula for Lead (II) phosphate?

a)

Pb₃(PO₄)₂

b)

Pb(PO₄)₂

c)

Pb(PO₄)₃

d)

Pb₂(PO₄)₃

45.

What is the chemical formula for Calcium sulfate?

a)

CaSO₄

b)

Ca₂SO₄

c)

CaS₂O₄

d)

Ca(SO₄)₂

46.

What is the chemical formula for Strontium nitrate?

a)

Sr(NO₃)₂

b)

Sr(NO₃)₃

c)

SrN₂O₆

d)

Sr(NO₃)

47.

What is the chemical formula for Ammonium cyanide?

a)

NH₄CN

b)

NH₄(CN)₂

c)

NH₃CN

d)

(NH₄)₂CN

48.

What is the chemical formula for Barium perchlorate?

a)

Ba(ClO₄)₂

b)

BaClO₄

c)

Ba(ClO₃)₂

d)

Ba(ClO)₂

49.

What is the chemical formula for Ammonium oxalate?

a)

(NH₄)₂C₂O₄

b)

NH₄C₂O₄

c)

(NH₄)₂(C₂O₄)₂

d)

NH₄(C₂O₄)₂

50.

What is the chemical formula for Sodium bicarbonate?

a)

NaHCO₃

b)

Na₂CO₃

c)

NaCO₃

d)

NaBicarbonate

51.

What type of ion carries a net positive charge?

a)

Anion

b)

Cation

c)

Monoatomic ion

d)

Polyatomic ion

52.

Which of the following ions contains only one type of atom?

a)

Na+

b)

NH₄⁺

c)

ClO₄⁻

d)

CN⁻

53.

An atom that gains or loses electrons during bonding results in:

a)

A change in the number of protons

b)

A change in the number of neutrons

c)

A change in the number of electrons

d)

No change

54.

What is the total number of protons in a sodium (Na+) ion?

a)

10

b)

11

c)

12

d)

13

55.

Which type of bond holds ionic compounds together?

a)

Covalent bonds

b)

Ionic bonds

c)

Metallic bonds

d)

Hydrogen bonds

56.

Which of the following is true for ionic compounds?

a)

They have low boiling points

b)

They are good conductors as liquids

c)

They are soft and flexible

d)

They are soluble in oil

57.

What is the oxidation number of sodium (Na) in NaCl?

a)

+1

b)

-1

c)

0

d)

+2

58.

The oxidation number of oxygen (O) in most compounds is:

a)

-1

b)

-2

c)

+2

d)

+1

59.

A covalent bond forms when atoms:

a)

Transfer protons

b)

Share electrons

c)

Gain neutrons

d)

Lose electrons

60.

Which of the following is a molecular compound?

a)

CHCl₃

b)

MgCl₂

c)

NaCl

d)

K₂O

61.

Which is the correct chemical formula for magnesium chloride?

a)

MgCl

b)

MgCl₂

c)

MgCl₃

d)

Mg₂Cl₃

62.

What is the oxidation number of fluorine (F) in a compound?

a)

+1

b)

0

c)

-1

d)

+2

63.

In which phase is iodine (I₂) at room temperature?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

64.

Which of the following has the lowest melting point?

a)

MgCl₂

b)

I₂

c)

CHCl₃

d)

NaCl

65.

Which element in a binary compound is assigned a negative oxidation state?

a)

The metal

b)

The more electronegative element

c)

The element with the lower atomic number

d)

The element in Group 1

66.

Which rule applies when determining the oxidation state in a polyatomic ion?

a)

The sum of the oxidation numbers equals the charge of the ion

b)

The oxidation number of each atom equals zero

c)

The oxidation number of hydrogen is always -1

d)

The charge of the ion is always positive

67.

What is the correct name for FeS using the stock method?

a)

Iron (II) sulfide

b)

Iron (I) sulfide

c)

Ironous sulfide

d)

Ferrous sulfide

68.

What is the correct formula for potassium chloride?

a)

K₂Cl

b)

KCl₂

c)

KCl

d)

K₂Cl₃

69.

The formula for sulfur hexafluoride is:

a)

SF₂

b)

SF₄

c)

S₂F₆

d)

SF₆

70.

Which of the following is an example of a ternary compound?

a)

NaCl

b)

H₂SO₄

c)

CO₂

d)

FeO

71.

Write the formula of the compound formed when the following ions combine. Aluminum ion (Al³⁺) combines with oxygen ion (O²⁻).

a)

AlO

b)

Al₂O₃

c)

Al₃O₂

d)

AlO₂

72.

Write the formula of the compound formed when the following ions combine. Potassium ion (K⁺) combines with nitrogen ion (N³⁻).

a)

KN

b)

K₃N

c)

K₂N

d)

KN₃

73.

Write the formula of the compound formed when the following ions combine. Barium ion (Ba²⁺) combines with oxygen ion (O²⁻).

a)

BaO₂

b)

Ba₂O

c)

BaO

d)

Ba₂O₃

74.

Write the formula of the compound formed when the following ions combine. Lithium ion (Li⁺) combines with sulfur ion (S²⁻).

a)

LiS

b)

Li₂S

c)

Li₃S₂

d)

LiS₂

75.

Write the formula of the compound formed when the following ions combine. Silver ion (Ag⁺) combines with nitrogen ion (N³⁻).

a)

Ag₃N

b)

AgN

c)

AgN₃

d)

Ag₂N₃

76.

Write the formula of the compound formed when the following ions combine. Aluminum ion (Al³⁺) combines with sulfur ion (S²⁻).

a)

AlS

b)

Al₃S₂

c)

Al₂S₃

d)

AlS₃

77.

What is the oxidation number of beryllium (Be) in most compounds?

a)

+1

b)

+2

c)

-1

d)

-2

78.

What is the oxidation number of sodium (Na) in NaCl?

a)

0

b)

+1

c)

-1

d)

+2

79.

What is the oxidation number of phosphorus (P) in most compounds?

4 lines
80.

What is the oxidation number of sodium (Na) in NaCl?

a)

0

b)

+1

c)

-1

d)

+2

81.

What is the oxidation number of phosphorus (P) in most compounds?

a)

+1

b)

+5

c)

+3

d)

-3

82.

What is the oxidation number of cesium (Cs) in compounds?

a)

+1

b)

0

c)

-1

d)

+3

83.

What is the oxidation number of aluminum (Al) in Al₂O₃?

a)

+1

b)

+2

c)

+3

d)

-1

84.

What is the oxidation number of bromine (Br) in HBr?

a)

0

b)

+1

c)

-1

d)

+2

85.

What is the oxidation number of chlorine (Cl) in NaCl?

a)

0

b)

-1

c)

+1

d)

+2

86.

What is the oxidation number of lithium (Li) in Li₂O?

a)

+1

b)

0

c)

-1

d)

+2

87.

Lithium ion (Li⁺) combines with carbonate ion (CO₃²⁻).

a)

Li₂CO₃

b)

Li₃CO₃

c)

LiCO₃

d)

Li₂(CO₃)₃

88.

Ammonium ion (NH₄⁺) combines with oxygen ion (O²⁻).

a)

NH₄O

b)

NH₄₂O

c)

(NH₄)₂O

d)

(NH₄O)₂

89.

Potassium ion (K⁺) combines with acetate ion (CH₃COO⁻).

a)

K₂(CH₃COO)₃

b)

KCH₃COO

c)

K₂CH₃COO

d)

K(CH₃COO)₂

90.

Iron(III) ion (Fe³⁺) combines with chromate ion (CrO₄²⁻).

a)

Fe₂(CrO₄)₃

b)

Fe(CrO₄)₂

c)

Fe₃(CrO₄)₂

d)

FeCrO₄

91.

Lead(II) ion (Pb²⁺) combines with dihydrogen phosphate ion (H₂PO₄⁻).

a)

Pb₂HPO₄

b)

PbH₂PO₄

c)

Pb₂(H₂PO₄)₂

d)

Pb(H₂PO₄)₂

92.

How many protons are in a sodium (Na) atom?

a)

10

b)

11

c)

12

d)

13

93.

How many electrons are in a neutral sodium (Na) atom?

a)

10

b)

11

c)

12

d)

13

94.

How many valence electrons does a sodium (Na) atom have?

a)

1

b)

2

c)

3

d)

4

95.

How many protons are in a chlorine (Cl) atom?

a)

16

b)

17

c)

18

d)

19

96.

How many electrons are in a neutral chlorine (Cl) atom?

a)

16

b)

17

c)

18

d)

19

97.

How many valence electrons does a chlorine (Cl) atom have?

a)

5

b)

6

c)

7

d)

8

98.

How many protons are in a beryllium (Be) atom?

a)

2

b)

4

c)

6

d)

8

99.

How many electrons are in a neutral beryllium (Be) atom?

a)

2

b)

4

c)

6

d)

8

100.

How many valence electrons does a beryllium (Be) atom have?

a)

2

b)

3

c)

4

d)

5

101.

How many protons are in a fluorine (F) atom?

a)

8

b)

9

c)

10

d)

11

102.

How many electrons are in a neutral fluorine (F) atom?

a)

8

b)

9

c)

10

d)

11

103.

How many valence electrons does a fluorine (F) atom have?

a)

5

b)

6

c)

7

d)

8

104.

How many protons are in a lithium (Li) atom?

a)

1

b)

2

c)

3

d)

4

105.

How many electrons are in a neutral lithium (Li) atom?

a)

1

b)

2

c)

3

d)

4

106.

How many valence electrons does a lithium (Li) atom have?

a)

1

b)

2

c)

3

d)

4

107.

How many protons are in an oxygen (O) atom?

a)

6

b)

7

c)

8

d)

9

108.

How many electrons are in a neutral oxygen (O) atom?

a)

6

b)

7

c)

8

d)

9

109.

How many valence electrons does an oxygen (O) atom have?

a)

4

b)

5

c)

6

d)

7

110.

How many protons are in a phosphorus (P) atom?

a)

13

b)

14

c)

15

d)

16

111.

How many electrons are in a neutral phosphorus (P) atom?

a)

13

b)

14

c)

15

d)

16

112.

How many valence electrons does a phosphorus (P) atom have?

a)

3

b)

4

c)

5

d)

6

113.

Iron (Fe)

a)

Higher: +2, Lower: +3

b)

Higher: +3, Lower: +2

c)

Higher: +4, Lower: +2

d)

Higher: +3, Lower: +1

114.

Tin (Sn)

a)

Higher: +2, Lower: +4

b)

Higher: +4, Lower: +2

c)

Higher: +3, Lower: +1

d)

Higher: +2, Lower: +3

115.

Copper (Cu)

a)

Higher: +3, Lower: +2

b)

Higher: +2, Lower: +1

c)

Higher: +1, Lower: +3

d)

Higher: +2, Lower: +4

116.

Lead (Pb)

a)

Higher: +4, Lower: +2

b)

Higher: +2, Lower: +3

c)

Higher: +3, Lower: +1

d)

Higher: +4, Lower: +1

117.

Mercury (Hg)

a)

Higher: +1, Lower: +2

b)

Higher: +3, Lower: +1

c)

Higher: +2, Lower: +1

d)

Higher: +2, Lower: +4

118.

Manganese (Mn)

a)

Higher: +7, Lower: +2

b)

Higher: +6, Lower: +3

c)

Higher: +4, Lower: +2

d)

Higher: +3, Lower: +1

119.

Cobalt (Co)

a)

Higher: +3, Lower: +1

b)

Higher: +4, Lower: +2

c)

Higher: +3, Lower: +2

d)

Higher: +2, Lower: +4

120.

Chromium (Cr)

a)

Higher: +3, Lower: +2

b)

Higher: +6, Lower: +3

c)

Higher: +5, Lower: +2

d)

Higher: +6, Lower: +4

121.

Gold (Au)

a)

Higher: +1, Lower: +2

b)

Higher: +3, Lower: +1

c)

Higher: +4, Lower: +2

d)

Higher: +3, Lower: +2

122.

What is the name of the compound Li₂S?

a)

Lithium Sulfide

b)

Lithium Sulfate

c)

Sulfur Lithium

d)

Sulfide Lithium

123.

What is the name of the compound SnBr₂?

a)

Tin(II) Bromide

b)

Tin Bromide

c)

Tin(IV) Bromide

d)

Bromine Tin

124.

What is the name of the compound HF(g)?

a)

Hydrogen Fluoride

b)

Fluorine Hydride

c)

Hydrofluoric Acid

d)

Fluoric Acid

125.

What is the name of the compound P₂O₅?

a)

Phosphorus Pentoxide

b)

Phosphorus Dioxide

c)

Diphosphorus Oxide

d)

Phosphoric Anhydride

126.

What is the name of the compound HI(aq)?

a)

Hydroiodic Acid

b)

Iodine Hydride

c)

Iodic Acid

d)

Hydriodic Acid

127.

What is the name of the compound AuO?

a)

Gold(I) Oxide

b)

Gold Oxide

c)

Auric Oxide

d)

Gold(II) Oxide

128.

What is the name of the compound CCl₄?

a)

Carbon Tetrachloride

b)

Carbon Chloride

c)

Tetrachlorocarbon

d)

Chlorinated Carbon

129.

What is the name of the compound CoI₂?

a)

Cobalt(I) Iodide

b)

Cobalt(II) Iodide

c)

Cobalt Iodide

d)

Iodide Cobalt

130.

What is the name of the compound CuCl₂?

a)

Copper(I) Chloride

b)

Copper(II) Chloride

c)

Copper Chloride

d)

Dichloride Copper

131.

What is the name of the compound Cs₃N?

a)

Cesium Nitride

b)

Cesium(I) Nitride

c)

Cesium Nitrate

d)

Tricesium Nitride

132.

What is the name of the compound AgBr?

a)

Silver Bromide

b)

Silver(I) Bromide

c)

Bromide Silver

d)

Silver Bromate

133.

What is the name of the compound Sn(ClO₃)₂?

a)

Tin(II) Chlorate

b)

Tin(IV) Chlorate

c)

Tin Chlorate

d)

Stannic Chlorate

134.

What is the name of the compound BaCr₂O₇?

a)

Barium Chromium Dioxide

b)

Barium Dichromate

c)

Barium Chromate

d)

Barium(II) Chromate

135.

What is the name of the compound (NH₄)₃PO₃?

a)

Ammonium Phosphate

b)

Ammonium Phosphite

c)

Triammonium Phosphate

d)

Ammonium Phosphoric Acid

136.

What is the chemical formula for Lead (II) phosphate?

a)

Pb₃(PO₄)₂

b)

Pb(PO₄)₂

c)

Pb(PO₄)₃

d)

Pb₂(PO₄)₃

137.

What is the chemical formula for Calcium sulfate?

a)

CaSO₄

b)

Ca₂SO₄

c)

CaS₂O₄

d)

Ca(SO₄)₂

138.

What is the chemical formula for Strontium nitrate?

a)

Sr(NO₃)₂

b)

Sr(NO₃)₃

c)

SrN₂O₆

d)

Sr(NO₃)

139.

What is the chemical formula for Ammonium cyanide?

a)

NH₄CN

b)

NH₄(CN)₂

c)

NH₃CN

d)

(NH₄)₂CN

140.

What is the chemical formula for Barium perchlorate?

a)

Ba(ClO₄)₂

b)

BaClO₄

c)

Ba(ClO₃)₂

d)

Ba(ClO)₂

141.

What is the chemical formula for Ammonium oxalate?

a)

(NH₄)₂C₂O₄

b)

NH₄C₂O₄

c)

(NH₄)₂(C₂O₄)₂

d)

NH₄(C₂O₄)₂

142.

What is the chemical formula for Sodium bicarbonate?

a)

NaHCO₃

b)

Na₂CO₃

c)

NaCO₃

d)

NaBicarbonate

143.

What type of ion carries a net positive charge?

a)

Anion

b)

Cation

c)

Monoatomic ion

d)

Polyatomic ion

144.

Which of the following ions contains only one type of atom?

a)

Na+

b)

NH₄⁺

c)

ClO₄⁻

d)

CN⁻

145.

An atom that gains or loses electrons during bonding results in:

a)

A change in the number of protons

b)

A change in the number of neutrons

c)

A change in the number of electrons

d)

No change

146.

What is the total number of protons in a sodium (Na+) ion?

a)

10

b)

11

c)

12

d)

13

147.

Which type of bond holds ionic compounds together?

a)

Covalent bonds

b)

Ionic bonds

c)

Metallic bonds

d)

Hydrogen bonds

148.

Which of the following is true for ionic compounds?

a)

They have low boiling points

b)

They are good conductors as liquids

c)

They are soft and flexible

d)

They are soluble in oil

149.

What is the oxidation number of sodium (Na) in NaCl?

a)

+1

b)

-1

c)

0

d)

+2

150.

The oxidation number of oxygen (O) in most compounds is:

a)

-1

b)

-2

c)

+2

d)

+1

151.

A covalent bond forms when atoms:

a)

Transfer protons

b)

Share electrons

c)

Gain neutrons

d)

Lose electrons

152.

Which of the following is a molecular compound?

a)

CHCl₃

b)

MgCl₂

c)

NaCl

d)

K₂O

153.

Which is the correct chemical formula for magnesium chloride?

a)

MgCl

b)

MgCl₂

c)

MgCl₃

d)

Mg₂Cl₃

154.

What is the oxidation number of fluorine (F) in a compound?

a)

+1

b)

0

c)

-1

d)

+2

155.

In which phase is iodine (I₂) at room temperature?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

156.

Which of the following has the lowest melting point?

a)

MgCl₂

b)

I₂

c)

CHCl₃

d)

NaCl

157.

Which element in a binary compound is assigned a negative oxidation state?

a)

The metal

b)

The more electronegative element

c)

The element with the lower atomic number

d)

The element in Group 1

158.

Which rule applies when determining the oxidation state in a polyatomic ion?

a)

The sum of the oxidation numbers equals the charge of the ion

b)

The oxidation number of each atom equals zero

c)

The oxidation number of hydrogen is always -1

d)

The charge of the ion is always positive

159.

What is the correct name for FeS using the stock method?

a)

Iron (II) sulfide

b)

Iron (I) sulfide

c)

Ironous sulfide

d)

Ferrous sulfide

160.

What is the correct formula for potassium chloride?

a)

K₂Cl

b)

KCl₂

c)

KCl

d)

K₂Cl₃

161.

The formula for sulfur hexafluoride is:

a)

SF₂

b)

SF₄

c)

S₂F₆

d)

SF₆

162.

Which of the following is an example of a ternary compound?

a)

NaCl

b)

H₂SO₄

c)

CO₂

d)

FeO

163.

Write the formula of the compound formed when the following ions combine. Aluminum ion (Al³⁺) combines with oxygen ion (O²⁻).

a)

AlO

b)

Al₂O₃

c)

Al₃O₂

d)

AlO₂

164.

Write the formula of the compound formed when the following ions combine. Potassium ion (K⁺) combines with nitrogen ion (N³⁻).

a)

KN

b)

K₃N

c)

K₂N

d)

KN₃

165.

Write the formula of the compound formed when the following ions combine. Barium ion (Ba²⁺) combines with oxygen ion (O²⁻).

a)

BaO₂

b)

Ba₂O

c)

BaO

d)

Ba₂O₃

166.

Write the formula of the compound formed when the following ions combine. Lithium ion (Li⁺) combines with sulfur ion (S²⁻).

a)

LiS

b)

Li₂S

c)

Li₃S₂

d)

LiS₂

167.

Write the formula of the compound formed when the following ions combine. Silver ion (Ag⁺) combines with nitrogen ion (N³⁻).

a)

Ag₃N

b)

AgN

c)

AgN₃

d)

Ag₂N₃

168.

Write the formula of the compound formed when the following ions combine. Aluminum ion (Al³⁺) combines with sulfur ion (S²⁻).

a)

AlS

b)

Al₃S₂

c)

Al₂S₃

d)

AlS₃

169.

What is the oxidation number of beryllium (Be) in most compounds?

a)

+1

b)

+2

c)

-1

d)

-2

170.

What is the oxidation number of sodium (Na) in NaCl?

a)

0

b)

+1

c)

-1

d)

+2

171.

What is the oxidation number of phosphorus (P) in most compounds?

4 lines
172.

What is the oxidation number of sodium (Na) in NaCl?

a)

0

b)

+1

c)

-1

d)

+2

173.

What is the oxidation number of phosphorus (P) in most compounds?

a)

+1

b)

+5

c)

+3

d)

-3

174.

What is the oxidation number of cesium (Cs) in compounds?

a)

+1

b)

0

c)

-1

d)

+3

175.

What is the oxidation number of aluminum (Al) in Al₂O₃?

a)

+1

b)

+2

c)

+3

d)

-1

176.

What is the oxidation number of bromine (Br) in HBr?

a)

0

b)

+1

c)

-1

d)

+2

177.

What is the oxidation number of chlorine (Cl) in NaCl?

a)

0

b)

-1

c)

+1

d)

+2

178.

What is the oxidation number of lithium (Li) in Li₂O?

a)

+1

b)

0

c)

-1

d)

+2

179.

Lithium ion (Li⁺) combines with carbonate ion (CO₃²⁻).

a)

Li₂CO₃

b)

Li₃CO₃

c)

LiCO₃

d)

Li₂(CO₃)₃

180.

Ammonium ion (NH₄⁺) combines with oxygen ion (O²⁻).

a)

NH₄O

b)

NH₄₂O

c)

(NH₄)₂O

d)

(NH₄O)₂

181.

Potassium ion (K⁺) combines with acetate ion (CH₃COO⁻).

a)

K₂(CH₃COO)₃

b)

KCH₃COO

c)

K₂CH₃COO

d)

K(CH₃COO)₂

182.

Iron(III) ion (Fe³⁺) combines with chromate ion (CrO₄²⁻).

a)

Fe₂(CrO₄)₃

b)

Fe(CrO₄)₂

c)

Fe₃(CrO₄)₂

d)

FeCrO₄

183.

Lead(II) ion (Pb²⁺) combines with dihydrogen phosphate ion (H₂PO₄⁻).

a)

Pb₂HPO₄

b)

PbH₂PO₄

c)

Pb₂(H₂PO₄)₂

d)

Pb(H₂PO₄)₂

184.

How many protons are in a sodium (Na) atom?

a)

10

b)

11

c)

12

d)

13

185.

How many electrons are in a neutral sodium (Na) atom?

a)

10

b)

11

c)

12

d)

13

186.

How many valence electrons does a sodium (Na) atom have?

a)

1

b)

2

c)

3

d)

4

187.

How many protons are in a chlorine (Cl) atom?

a)

16

b)

17

c)

18

d)

19

188.

How many electrons are in a neutral chlorine (Cl) atom?

a)

16

b)

17

c)

18

d)

19

189.

How many valence electrons does a chlorine (Cl) atom have?

a)

5

b)

6

c)

7

d)

8

190.

How many protons are in a beryllium (Be) atom?

a)

2

b)

4

c)

6

d)

8

191.

How many electrons are in a neutral beryllium (Be) atom?

a)

2

b)

4

c)

6

d)

8

192.

How many valence electrons does a beryllium (Be) atom have?

a)

2

b)

3

c)

4

d)

5

193.

How many protons are in a fluorine (F) atom?

a)

8

b)

9

c)

10

d)

11

194.

How many electrons are in a neutral fluorine (F) atom?

a)

8

b)

9

c)

10

d)

11

195.

How many valence electrons does a fluorine (F) atom have?

a)

5

b)

6

c)

7

d)

8

196.

How many protons are in a lithium (Li) atom?

a)

1

b)

2

c)

3

d)

4

197.

How many electrons are in a neutral lithium (Li) atom?

a)

1

b)

2

c)

3

d)

4

198.

How many valence electrons does a lithium (Li) atom have?

a)

1

b)

2

c)

3

d)

4

199.

How many protons are in an oxygen (O) atom?

a)

6

b)

7

c)

8

d)

9

200.

How many electrons are in a neutral oxygen (O) atom?

a)

6

b)

7

c)

8

d)

9

201.

How many valence electrons does an oxygen (O) atom have?

a)

4

b)

5

c)

6

d)

7

202.

How many protons are in a phosphorus (P) atom?

a)

13

b)

14

c)

15

d)

16

203.

How many electrons are in a neutral phosphorus (P) atom?

a)

13

b)

14

c)

15

d)

16

204.

How many valence electrons does a phosphorus (P) atom have?

a)

3

b)

4

c)

5

d)

6

205.

Iron (Fe)

a)

Higher: +2, Lower: +3

b)

Higher: +3, Lower: +2

c)

Higher: +4, Lower: +2

d)

Higher: +3, Lower: +1

206.

Tin (Sn)

a)

Higher: +2, Lower: +4

b)

Higher: +4, Lower: +2

c)

Higher: +3, Lower: +1

d)

Higher: +2, Lower: +3

207.

Copper (Cu)

a)

Higher: +3, Lower: +2

b)

Higher: +2, Lower: +1

c)

Higher: +1, Lower: +3

d)

Higher: +2, Lower: +4

208.

Lead (Pb)

a)

Higher: +4, Lower: +2

b)

Higher: +2, Lower: +3

c)

Higher: +3, Lower: +1

d)

Higher: +4, Lower: +1

209.

Mercury (Hg)

a)

Higher: +1, Lower: +2

b)

Higher: +3, Lower: +1

c)

Higher: +2, Lower: +1

d)

Higher: +2, Lower: +4

210.

Manganese (Mn)

a)

Higher: +7, Lower: +2

b)

Higher: +6, Lower: +3

c)

Higher: +4, Lower: +2

d)

Higher: +3, Lower: +1

211.

Cobalt (Co)

a)

Higher: +3, Lower: +1

b)

Higher: +4, Lower: +2

c)

Higher: +3, Lower: +2

d)

Higher: +2, Lower: +4

212.

Chromium (Cr)

a)

Higher: +3, Lower: +2

b)

Higher: +6, Lower: +3

c)

Higher: +5, Lower: +2

d)

Higher: +6, Lower: +4

213.

Gold (Au)

a)

Higher: +1, Lower: +2

b)

Higher: +3, Lower: +1

c)

Higher: +4, Lower: +2

d)

Higher: +3, Lower: +2