Answers2003350 Chemistry HONORS Sem 1 - MarezIonic Bonding

Ionic Bonding Answers

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Select the word or phrase from the drop-down menu to describe ionic compounds.A formula unit represents the simplest ratio of elements in a of an ionic compound.

A
crystal
B
molecule
2
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A crystal is made up of

A
the number of atoms given in a formula unit.
B
many molecules that are represented by the formula unit.
C
many atoms that are arranged in a regular pattern.
3

There are two magnesium ions for every two sulfide ions in magnesium sulfide. The ratio of Mg to S in the formula unit is .

A
1:1
B
2:2
C
1:2
4

The formula for the ammonium ion:

A
NH3
B
NH4+
C
Am+
5

The formula for the nitrate ion:

A
NO3–
B
NO2–
C
NO3+
6

A chromate ion consists of four oxygen atoms bonded to a chromium atom. It has two extra electrons. The formula of this ion:

A
Cr4O2–
B
CrO42+
C
CrO42–
7

The polyatomic ion with the formula CN- is called

A
carbonate.
B
cyanide.
C
nitrite.
8

The polyatomic ion with the formula HPO42- is called

A
hydrogen phosphate.
B
phosphate.
C
hydrogen peroxide.
9

The formula for the compound ammonium chloride:

A
NH4Cl+
B
NH4Cl
C
NH3Cl
D
NH4Cl2
10

The formula for ammonium carbonate:

A
NH4HCO3
B
NH4CO3
C
(NH4)2CO3
11

The formula for sodium phosphate:

A
NaPO4
B
Na(PO4)3
C
Na3PO4
12

Which statements describe lattice energy?

A
It is the energy the ions absorb when they form a crystalline compound.
B
It increases as the size of the ions decreases.
C
It increases as the charge on the ions increases.
D
It explains why ions form molecules.
E
It is a measure of the strength of the bonds between ions in a compound.
13

The melting point of an ionic compound is likely to be a molecular compound.

A
higher than
B
lower than
C
the same as
14

Ionic compounds can conduct electricity in

A
the solid state.
B
the liquid state.
C
solution.
D
solution and the liquid state.
15

Ionic compounds tend to be

A
hard.
B
soft.
C
bendable.
16

Ionic compounds in water.

A
are extremely soluble
B
are slightly soluble
C
have varying solubilities

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