unit 5

Question 1

what type of element forms a metallic bond?

Answer 1

metals

Question 2

how is a metallic bond formed?

Answer 2

attraction between free floating electrons and cations form a bond

Question 3

the structure of a metallic bond

Answer 3

Ve- move freely around the cations

Question 4

propertys of metals and why

Answer 4

melting point in low, not hard because electrons already sliding past each other. boiling point is high because lots of energy required to separate e- from cations

Question 5

why are metals good conductors of electricity?

Answer 5

electrons can flow freely, negative energy conducts electricity

Question 6

what type of element forms ionic bonds

Answer 6

metal + nonmetal

Question 7

how is an ionic bond formed?

Answer 7

electrons are transferred from metal to nonmetal

Question 8

what is the force of attraction of an ionic bond?

Answer 8

strong

Question 9

why do elements gain or lose electrons?

Answer 9

to reach stability at 8ve-

Question 10

how is the potential energy of the atom changed when it loses/gains electrons

Answer 10

the potential energy decreases

Question 11

what is the overall charge of an ionic compound? how is this achieved?

Answer 11

0. cations and anions attract each other, forming the ionic bond

Question 12

what is electronegativity? how does electronegatively influence ionic character?

Answer 12

the ability of an atom to attract an electron. where electrons are transferred from the less electronegative atom to the more electronegative one.

Question 13

structure and strength of an ionic bond

Answer 13

crystal lattice; strongest

Question 14

describe the properties of ionic bonds and why

Answer 14

high melting point and boiling point, crystal lattice, highly conductive, hard and brittle. crystal lattice has cations surrounded by anions and vice versa, making it very hard to separate.

Question 15

good conductor? MgCl(s)

Answer 15

no solid

Question 16

good conductor? CaF2 (aq)

Question 17

good conductor? MgCl2(aq)

Answer 17

yes

Question 18

good conductor? CO2(aq)

Question 19

NaBr

Answer 19

sodium bromide

Question 20

Zn3N2

Answer 20

zinc nitride

Question 21

CuCl

Answer 21

copper(I) chloride

Question 22

CoI3

Answer 22

Cobalt (III) iodine

Question 23

CuS

Answer 23

Cobalt (II) sulfide

Question 24

FeO

Answer 24

Iron (II) oxide

Question 25

Ag2CrO4

Answer 25

silver chromate

Question 26

Zn(ClO3)2

Answer 26

Zinc chlorate

Question 27

Cu2CO3

Answer 27

copper (II) carbonate

Question 28

Li3PO4

Answer 28

lithium phosphate

Question 29

NaClO

Answer 29

sodium hypochlorite

Question 30

K3SO4

Answer 30

potassium sulfate

Question 31

Ca(OH)2

Answer 31

Calcium hydroxide

Question 32

magnesium dichromate

Answer 32

MgCl2O7

Question 33

zinc phosphate

Answer 33

Zn(PO4)2

Question 34

Cobalt (III) sulfide

Answer 34

Co2(SO3)3

Question 35

chromium (III) nitrate

Answer 35

Cr(NO3)3

Question 36

magnesium phosphide

Answer 36

Mg3P2

Question 37

lead (IV) sulfide

Answer 37

PbS2

Question 38

ammonium carbonate

Answer 38

(NH4)2CO3

Question 39

lead (II) nitrite

Answer 39

Pb(NO2)2

Question 40

tin (II) cyanide

Answer 40

Sn(CN)2

Question 41

aluminum acetate

Answer 41

Al(C2H3O2)3

Question 42

potassium permanganate

Answer 42

KMnO4

Question 43

potassium nitride

Answer 43

K3N

Question 44

nickel (III) chloride

Answer 44

NiCl3