Question 1

Identify the charge carried by a phosphide ion.

Accepted Answer

-3

Answer

+3

Answer

-1

Answer

+3

Question 2

Which of the following pairs of elements would not react to form an ionic compound?

Accepted Answer

Sulfur and Phosphorus

Answer

Aluminum and Bromine

Answer

Sodium and Iodine

Answer

Iron and Oxygen

Question 3

Which of the following pairs of elements could react to form an ionic compound?

Accepted Answer

Fluorine and Copper

Answer

Hydrogen and Oxygen

Answer

Potassium and Calcium

Answer

Sulfur and Oxygen

Question 4

Which of the following is the correct ionic compound formula for Iron (III) oxide

Accepted Answer

Fe2O3

Answer

Fe3O2

Answer

Fe2O

Answer

FeO

Question 5

Identify the charge carried by a chloride ion.

Accepted Answer

-1

Answer

+1

Answer

-2

Answer

+2

Question 6

When elements gain or lose electrons to form ions,

Accepted Answer

they have a complete outer shell of electrons

Answer

they become unstable

Answer

they become noble gases

Answer

their nuclei become more stable

Question 7

Identify the charge carried by a potassium ion.

Accepted Answer

+1

Answer

-2

Answer

+2

Answer

-1

Question 8

When forming ions, metals can be expected to ____ electrons while nonmetals can be expected to ___ electrons.

Accepted Answer

lose / gain

Answer

acquire / disperse

Answer

gain / lose

Answer

split / destroy

Question 9

Identify the charge carried by an oxide ion

Accepted Answer

-2

Answer

+1

Answer

+2

Answer

-1

Question 10

Which of the following is the correct ionic compound formula for calcium sulfide?

Accepted Answer

CaS

Answer

CaS2

Answer

Ca2S

Answer

Ca3S2

Question 11

Which of the following is the correct ionic compound formula for copper (II) fluoride?

Accepted Answer

CuF2

Answer

Cu2F

Answer

Cu2F3

Answer

CuF

Question 12

What is the molar mass of calcium oxide, CaO, rounded to the ones place?

Accepted Answer

56

Answer

72

Answer

48

Answer

28

Question 13

Identify the charge carried by a magnesium ion.

Accepted Answer

2+

Answer

2-

Answer

1-

Answer

1+

Question 14

Identify the charge carried by an aluminum ion.

Accepted Answer

3+

Answer

2-

Answer

2+

Answer

3-

Question 15

Ionic compounds are ordinarily found as

Accepted Answer

crystals

Answer

gases

Answer

plasma

Answer

liquids

Question 16

Ionic compounds are held together by

Accepted Answer

electrostatic forces - opposites attract

Answer

nuclear forces that overcome the repulsion of similar charges.

Answer

unknown forces - no one is certain what holds ionic compounds together

Answer

gravitational forces, since the ions are not the same size

Question 17

What is the formula mass of sodium nitride, Na3N, rounded to the ones place?

Accepted Answer

83 grams

Answer

37 grams

Answer

40 grams

Answer

69 grams

Question 18

When electrons are exchanged between metals and nonmetals, metals ___ electrons to form ____.

Accepted Answer

lose / cations

Answer

gain / cations

Answer

lose / anions

Answer

gain / anions

Question 19

When electrons are exchanged between metals and nonmetals, nonmetals ____ electrons to form ____.

Accepted Answer

gain / anions

Answer

gain / cations

Answer

lose / cations

Answer

lose / anions

Question 20

Which of the following is the correct ionic compound formula for sodium iodide?

Accepted Answer

NaI

Answer

Na3I2

Answer

Na3I

Answer

Na2I

Question 21

Which of the following is the correct ionic compound formula for barium nitride?

Accepted Answer

Ba3N2

Answer

Ba2N

Answer

Ba2N3

Answer

BaN2

Question 22

What is the formula mass from Chromium (III) fluoride, CrF3, rounded to the ones place?

Accepted Answer

109 grams

Answer

51 grams

Answer

81 grams

Answer

71 grams

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