PRELIM: 4

Question 1

Forces that hold groups of atoms together and make them function as a unit.

Answer 1

Bonds

Question 2

transfer of electrons

Answer 2

Ionic bonds

Question 2

sharing of electrons

Answer 2

Covalent bonds

Question 3

________ gains electrons to form negatively charged anions

Answer 3

Nonmetals

Question 3

______ lose electrons to form positively-charged cations

Answer 3

Metals

Question 3

Ionic compounds form so that each atom, by _____________ electrons, has an octet of electrons in its highest occupied energy level.

Answer 3

gaining or losing electrons

Question 4

Chlorine has ______ valence electrons

Answer 4

7

Question 4

Sodium has _____ valence electron

Answer 4

1

Question 4

The resulting ions come together due to_________________(opposites attract)

Answer 4

electrostatic attraction

Question 4

Mg2+Cl-2

Answer 4

Magnesium chloride

Question 5

The net charge on the compound must equal ______

Answer 5

zero

Question 6

Na+2O2-

Answer 6

Sodium oxide

Question 7

Al3+2S2-3

Answer 7

Aluminum sulfide

Question 7

Properties of Ionic Compounds
Structure:

Answer 7

Crystalline solids

Question 8

Ionic compounds form solid _____ at ordinary temperatures.

Answer 8

crystals

Question 9

Properties of Ionic Compounds
Melting point:

Answer 9

Generally high

Question 9

Properties of Ionic Compounds
Boiling Point:

Answer 9

Generally high

Question 9

Properties of Ionic Compounds
Electrical Conductivity:

Answer 9

Excellent conductors, molten and aqueous

Question 10

Properties of Ionic Compounds
Solubility in water:

Answer 10

Generally soluble