MC	Chemistry	Standard: 03
Objective: 03. Relate properties of compounds to bonding, shape, and intermolecular forces.
ILO:

Which element has the highest electrical conductivity when a large amount of it is present?

a. Mg

b. H

c. He

d. Cl

Correct Answer: a

MC	Chemistry	Standard: 03
Objective: 03. Relate properties of compounds to bonding, shape, and intermolecular forces.
ILO:

A chemist performs the same tests on two white crystalline solids, A and B. The results are show in the table below.

	Solid A	Solid B
Melting Point	High, 801≈C	Low, decomposes at 186≈C
Solubility in H2O (grams per 100.0 g in H2O at 0≈C)	35.7	3.2
Electrical Conductivity (in aqueous solution)	Good conductor	Nonconductor

The results of these tests suggest that:

a. both solids contain only ionic bonds

b. both solids contain only covalent bonds

c. solid A contains only covalent bonds and solid B contains only ionic bonds

d. solid A contains only ionic bonds and solid B contains only covalent bonds

Correct Answer: d

MC	Chemistry	Standard: 03
Objective: 03. Relate properties of compounds to bonding, shape, and intermolecular forces.
ILO:

1. What type of bond is used when hydrogen is bonded to oxygen in a water molecule?

a. covalent.

b. non-polar

c. hydrogen.

d. ionic.

e. polar.

2. What type of bond forms between carbon and hydrogen in 1.ia molecule of methane?

a. covalent.

b. non-polar

c. hydrogen.

d. ionic.

e. polar.

Correct Answers:

1. a

2. a

MC	Chemistry	Standard: 03
Objective: 03. Relate properties of compounds to bonding, shape, and intermolecular forces.
ILO:

Which are the properties of metals?

a. conductor, brittle low melting point, lustrous

b. non conductor, brittle low melting point, lustrous

c. malleable, conductor, high melting point, lustrous

d. non conductor, brittle, high melting point, lustrous

e. non conductor, brittle, high melting point, non lustrous

Correct Answer: c

MC	Chemistry	Standard: 03
Objective: 03. Relate properties of compounds to bonding, shape, and intermolecular forces.
ILO:

Which substance at STP conducts electricity because the substance contains mobile electrons?

a. H

b. He

c. K

d. Kr

Correct Answer: c

MC	Chemistry	Standard: 03
Objective: 03. Relate properties of compounds to bonding, shape, and intermolecular forces.
ILO:

Which compound conducts electricity when dissolved in water?

a. C₆H₁₂O₆

b. C₁₂H₂₂O₁₁

c. CH₃OH

d. Ca(OH)₂

Correct Answer: d

MC	Chemistry	Standard: 03
Objective: 03. Relate properties of compounds to bonding, shape, and intermolecular forces.
ILO:

Which molecule has an asymmetrical shape?

a. N₂

b. NH₃

c. Cl₂

d. CCl₄

Correct Answer: b

MC	Chemistry	Standard: 03
Objective: 03. Relate properties of compounds to bonding, shape, and intermolecular forces.
ILO:

Which molecule is polar and contains polar bonds?

a. CCl₄

b. CO₂

c. N₂

d. NH₃

Correct Answer: b

MC	Chemistry	Standard: 03
Objective: 03. Relate properties of compounds to bonding, shape, and intermolecular forces.
ILO:

The table below shows four compounds and the boiling point of each.

Compound	Boiling Point
H2O	100.≈C
H2S	-60.7≈C
H2Se	-41.5≈C
H2Te	-2.2≈C

Which type of molecular attraction accounts for the high boiling point of H₂O?

a. molecule-ion

b. ion-ion

c. hydrogen bonding

d. van der Waals forces

Correct Answer: c

MC	Chemistry	Standard: 03
Objective: 03. Relate properties of compounds to bonding, shape, and intermolecular forces.
ILO:

When compared to H₂S, H₂O has a higher boiling point because H₂O contains stronger

a. metallic bonds

b. covalent bonds

c. ionic bonds

d. hydrogen bonds

Correct Answer: d

I	Chemistry	Standard: 03
Objective: 03. Relate properties of compounds to bonding, shape, and intermolecular forces.
ILO:

Analyzing a Titration Experiment

Given: Becky is conducting an experiment in which she measures 30 ml of an acid of unknown concentration. She adds an indicator solution to it, then slowly adds a basic solution of a known concentration from a buret until the acid solution is neutralized. She measure and records the pH of the solution periodically throughout the experiment.

1. What laboratory technique is Becky using?

a. electrolysis

b. distillation

c. titration

d. electrophoresis

2. Which reaction would fit this experiment?

a. CuSO₄ + 2NaCl --> Na₂SO₄ + CuCl₂

b. 2H₂O --> 2H₂ + O₂

c. KOH + HCl --> H₂O + KCl

d. 2H₂O + BaSO₄ --> H₂SO₄ + Ba(OH) ₂

e. All of the reactions listed.

3. All bonds holding atoms together within both the reactants and products in BeckyÕs experiment are of what type?

a. Metallic

b. Ionic

c. Covalent

d. Ionic and Covalent

e. Hydrogen

Correct Answers:

1. c

2. c

3. d