AnswersNY-Chemistry Term 1 HillcrestIntermolecular Forces

Intermolecular Forces — Unit test Answers

22 verified answers
1
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Based on its location in the periodic table, what can most likely be predicted about phosphorus?

A
It has three valence electrons.
B
It has four valence electrons.
C
It has five valence electrons.
D
It has six valence electrons.
2
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Which statement best describes the properties of metals?

A
They are shiny and bend without breaking.
B
They are dull and are good electrical insulators.
C
They conduct electricity well and are brittle.
D
They can be flattened and do not conduct heat well.
3

An element has six valence electrons available for bonding. Which group of the periodic table does this element most likely belong to?

A
group 2
B
group 4
C
group 16
D
group 18
4

Which statement describes how the binary ionic compound KBr is named?

A
The nonmetal is named first, and the name is unchanged.
B
The metal is named first, and the name is unchanged.
C
The nonmetal is named second, and the name is unchanged.
D
The metal is named second, and the name is unchanged.
5

Which statement is true about ionic compounds?

A
Solid ionic compounds are good conductors of electricity.
B
Ionic compounds have varying solubilities in water.
C
Ionic compounds have very low melting points.
D
Ionic compounds are very easy to bend.
6

How do ionic bonds affect the properties of ionic compounds?

A
The bonds weakly hold ions together, increasing the melting point.
B
The bonds strongly hold ions together, reducing the boiling point.
C
The bonds prevent ions from moving throughout the crystal, so a solid ionic compound is a poor conductor.
D
The bonds prevent electrons from moving throughout the crystal, so a solid ionic compound is a good conductor.
7

What is the ratio of Al ions to S ions in a neutral compound?

Question illustration
A
1:1
B
2:1
C
2:3
D
3:2
8

How do ionic bonds affect the properties of ionic compounds?

A
The bonds weakly hold ions together, increasing the melting point.
B
The bonds strongly hold ions together, reducing the boiling point.
C
The bonds prevent ions from moving throughout the crystal, so a solid ionic compound is a poor conductor.
D
The bonds prevent electrons from moving throughout the crystal, so a solid ionic compound is a good conductor.
9

Which is the name for SiO2?

A
silicon dioxide
B
silicon trioxygen
C
disilicon dioxygen
D
monosilicon oxide
10

Among the intermolecular forces, which forces are typically the weakest?

A
dipole-dipole interactions
B
hydrogen bonds
C
dipole-induced dipole interactions
D
London dispersion forces
11

Which statement describes covalent bases?

A
They have hydroxide ions.
B
They produce hydrogen ions.
C
They are often amines.
D
They are named the same as ionic compounds.
12

Which statement best describes the effect of low ionization energies and low electronegativities on metallic bonding?

A
The valence electrons are easily delocalized.
B
The valence electrons stay in a single orbital.
C
The valence electrons break free of the crystals.
D
The valence electrons move closer to the nuclei.
13

The diagram below shows DNA molecules.What do the broken lines connected to hydrogen atoms represent in this diagram?

Question illustration
A
the weakest intermolecular forces
B
the weakest intramolecular forces
C
the strongest intermolecular forces
D
the strongest intramolecular forces
14

Which element is likely to be the most brittle?

A
selenium
B
cobalt
C
platinum
D
zinc
15

Which compound has the highest melting point?

A
Al2(CO3)3
B
C12H22O11
C
C8H18
D
H2O
16

Which of the following compounds would be expected to have the strongest ionic bonds?

A
the compound that has the largest ions with the greatest charge
B
the compound that has the largest ions with the least charge
C
the compound that has the smallest ions with the greatest charge
D
the compound that has the smallest ions with the least charge
17

Which statement best describes London dispersion forces?

A
repulsive intramolecular forces
B
attractive intramolecular forces
C
attractive intermolecular forces
D
repulsive intermolecular forces
18

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

A
ZnP
Option A
B
Zn(PO)
Option B
C
Zn(PO)
Option C
D
Zn(NO)
Option D
19

What is the name of the ionic compound CaO?

A
calcium oxygen
B
calcium oxide
C
calcium(I) oxide
D
calcium(II) oxide
20

The diagram below shows the atoms involved in forming table salt.Which statement best describes what happens next?

Question illustration
A
Sodium becomes an anion by losing an electron to chlorine.
B
Chlorine becomes a cation by losing an electron to sodium.
C
Sodium becomes a cation by gaining an electron from chlorine.
D
Chlorine becomes an anion by gaining an electron from sodium.

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