ch 4

Question 1

ionic compounds

Answer 1

• high melting

- good elec. conductors in liquid state or solution

Question 2

molecular compounds

Answer 2

• low melting

- poor elec. conductors

Question 3

chemical bonds

Answer 3

attractive force that holds 2 atoms together –> results from electron interactions

Question 4

ionic bond

Answer 4

TRANSFER of electrons

Question 5

covalent bond

Answer 5

SHARING of electrons

Question 6

octet rule

Answer 6

atoms try to attain 8 valence e- (noble gas elec. config) by gaining, losing, or sharing e-

Question 7

valence shell

Answer 7

outer most electron shell of rep. or noble gas element

found in s and p sub shells

Question 8

lewis symbol

Answer 8

symbol of element surrounded by valence e- (dots)

Question 9

ions

Answer 9

charged atoms resulting from loss/gain of electrons

Li v..s Li+

Question 10

cation

Answer 10

atom LOSES electrons to become + ion

PAWSITIVE

Question 11

anion

Answer 11

atom GAINS electrons to become - ion

Question 12

which groups LOSE electrons

Answer 12

I-III (metals)

Question 13

which groups GAIN electrons

Answer 13

V-VI (non metals)

Question 14

which group can GAIN OR LOSE electrons

Answer 14

IV

Question 15

nomenclature of binary ionic compounds

Answer 15

full name of metal + stem of non metal + “ide”