Ionic Bonding Review!

Types of Bonds

100

The bonds in CH₄ (methane) are best described as 

A) covalent, because valence electrons are shared

B) covalent, because valence electrons are transferred 

C) ionic, because valence electrons are shared 

D) ionic, because valence electrons are transferred

A) covalent, because valence electrons are shared

200

An ionic compound is formed when there is a reaction between the elements 

A) strontium and chlorine

B) hydrogen and chlorine 

C) nitrogen and oxygen 

D) sulfur and oxygen

Ionic compound = metal and nonmetal 

A) strontium and chlorine

300

Describe the energy change and bonds in this reaction. 

Is this an exothermic or endothermic reaction? 

Break bonds, energy IN (absorb)

endothermic reaction

Have to put energy in to break bonds 

400

What is the Lewis electron–dot diagram for the sulfide ion? 

 

Sulfur = 2-8-6
Gain 2 more electrons --> 2-8-8 = full outermost shell 

B)  Sulfide ion = S^2-

500

When sodium and fluorine combine to produce the compound NaF, the ions formed have the same electron configuration as atoms of

A) argon, only 

B) neon, only

C) both argon and neon 

D) neither argon nor neon  

B) neon, only 

Na⁺ = 2-8 = Ne

F^- = 2-8 = Ne

Bond Properties

100

Atoms of metals tend to

A) lose electrons and form negative ions

B) lose electrons and form positive ions

C) gain electrons and form negative ions

D) gain electrons and form positive ions

Metals are located on the left hand side of PTable 

Ex. Na, Mg, Ca

These tend to lose electrons such as 2-8-1 --> 2-8 for a full outermost shell 

Losing electron = more positively charged = positive ion 

Ex. Na --> Na⁺

B) lose electrons and form positive ions

200

A substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as

A) an ionic compound

B) a molecular compound 

C) a metal 

D) a nonmetal

A) an ionic compound 

Solid ionic compounds do NOT conduct electricity. Yet, if dissolved in water (aq) OR melted = molten, CAN conduct electricity!

300

Which pair of atoms will share electrons when a bond is formed between them? 

A) Ba and I 

B) Br and Cl

C) K and Cl 

D) Li and I

Sharing of electrons = covalent 

nonmetals, only

B) Br and Cl

400

A solid substance was tested in the laboratory. The test results are listed below.

• dissolves in water 

• is an electrolyte (conducts electricity in aq solution)

• melts at a high temperature 

Based on these results, the solid substance could be

A) Ni 

B) MgBr₂

C) C

D) C₆H₁₂O₆ 

B) MgBr₂

IONIC compounds are electrolytes = conducts electricity in water (aq)!

have HIGH MP and BPs

500

A substance that consists of positive ions bonded together by electrons which move freely from ion to ion (sea of mobile electrons) is 

A) Au

B) Kr 

C) NaCl 

D) C

A) Au

Electrons moving freely from ion to ion (HOT Potato!)

Metallic bonds! 

Look for a metal = Au 

IUPAC Naming Conventions

100

Given the chemical formula: CaH₂ 

Write the IUPAC name

Ca has only one possible charge

No Roman Numerals! 

Calcium hydride

200

What is the chemical formula for iron(III) oxide?

A) FeO

B) Fe₂O₃

C) Fe₃O

D) Fe₃O₂

Fe³⁺  O^2- 

Criss-cross 

B) Fe₂O₃

300

Which element forms a compound with chlorine with the general formula XCl

A) Rn

B) Ra

C) Re

D) Rb

Cl^-1

Sum of all charges = 0 

Looking for a +1 to neutralize -1 

D) Rb⁺¹

400

An atom represented by X forms a compound with the formula X₃N₂. The atom could be

A) Na

B) Mg

C) Al

D) Cs

Reverse Criss-cross 

X²⁺    N^3-

Look on the PTable for a 2+ charge 

Mg = Group 2!

B) Mg

500

What is the chemical formula for lead(IV) oxide?

A) Pb₂O

B) PbO₄

C) PbO₂

D) Pb₄O

Pb⁴⁺      O^2-

Criss-cross

Pb₂O₄

Simplify :)   

C) PbO₂

Polyatomic Ions

100

Which polyatomic ion has a charge of 2-?

A) hydronium 

B) acetate 

C) perchlorate 

D) sulfate

Look on Table E!

D) sulfate

SO₄ ^2-

200

Which compound contains both ionic and covalent bonds? 

A) CH₂O

B) PCl₃ 

C) MgF₂ 

D) CaCO₃

D) CaCO₃

 

300

In the formula X₂(SO₄)₃, the X represents a metal. This metal could be located on the Periodic Table in

A) Group1

B) Group 2

C) Group 13

D) Group 14

Reverse criss-cross method 

X³⁺       SO₄ ^2-

C) Group 13

400

What is the chemical formula for sodium sulfate?

A) Na₂SO₃

B) Na₂SO₄

C) NaSO₄

D) NaSO₃

Na⁺   SO₄ ^2-

Criss-cross

B)  Na₂SO₄

500

Which formula represents strontium phosphate?

A) SrPO₄

B) Sr₃PO₈

C) Sr₂(PO₄)₃

D) Sr₃(PO₄)₂

Sr²⁺   PO₄ ^3- 

Criss-cross

D)  Sr₃(PO₄)₂

Miscellaneous

100

Which element, when combined with a nonmetal to form an ionic compound, requires a Roman numeral?

A) Ni

B) Ga

C) Rh 

D) Ta

A) Ni 

More than one possible charge!

200

Which statement describes what occurs as two atoms of bromine combine to become a molecule of bromine? 

A) Energy is absorbed as a bond is formed. 

B) Energy is absorbed as a bond is broken. 

C) Energy is released as a bond is formed. 

D) Energy is released as a bond is broken.

Correct Answer: C)

Bromine atoms are combining to FORM a bond.

Energy gets released!

(Break In Make Out)

300

Explain the difference between ... 

Nitride 

Nitrite

Nitrate 

Nitride = N

Nitrite = polyatomic ion = NO₂ ^-

Nitrate = polyatomic ion = NO₃ ^-

400

Element X reacts with iron to form two different compounds with the formulas FeX and Fe₂X₃ . To which group on the Periodic Table does element X belong?

 A) Group 8

B) Group 2

C) Group 13

D) Group 16

FeX  = Fe²⁺    X^2- 

Fe₂X₃ = Fe³⁺   X^2-

-2 = Group 16 !  D)

500

Based on bond type, which compound has the highest melting point?

A) CH₃OH 

B) C₆H₁₄ 

C) CaCl₂

D) CCl₄

C) CaCl₂

IONIC bonds have HIGH melting points!!!

Look for a bond between a metal and a nonmetal