unit 5 Flashcards

1
Q

what type of element forms a metallic bond?

A

metals

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2
Q

how is a metallic bond formed?

A

attraction between free floating electrons and cations form a bond

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3
Q

the structure of a metallic bond

A

Ve- move freely around the cations

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4
Q

propertys of metals and why

A

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

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5
Q

why are metals good conductors of electricity?

A

electrons can flow freely, negative energy conducts electricity

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6
Q

what type of element forms ionic bonds

A

metal + nonmetal

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7
Q

how is an ionic bond formed?

A

electrons are transferred from metal to nonmetal

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8
Q

what is the force of attraction of an ionic bond?

A

strong

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9
Q

why do elements gain or lose electrons?

A

to reach stability at 8ve-

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10
Q

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

A

the potential energy decreases

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11
Q

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

A
  1. cations and anions attract each other, forming the ionic bond
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12
Q

what is electronegativity? how does electronegatively influence ionic character?

A

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

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13
Q

structure and strength of an ionic bond

A

crystal lattice; strongest

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14
Q

describe the properties of ionic bonds and why

A

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.

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15
Q

good conductor? MgCl(s)

A

no solid

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16
Q

good conductor? CaF2 (aq)

A
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17
Q

good conductor? MgCl2(aq)

A

yes

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18
Q

good conductor? CO2(aq)

A
19
Q

NaBr

A

sodium bromide

20
Q

Zn3N2

A

zinc nitride

21
Q

CuCl

A

copper(I) chloride

22
Q

CoI3

A

Cobalt (III) iodine

23
Q

CuS

A

Cobalt (II) sulfide

24
Q

FeO

A

Iron (II) oxide

25
Q

Ag2CrO4

A

silver chromate

26
Q

Zn(ClO3)2

A

Zinc chlorate

27
Q

Cu2CO3

A

copper (II) carbonate

28
Q

Li3PO4

A

lithium phosphate

29
Q

NaClO

A

sodium hypochlorite

30
Q

K3SO4

A

potassium sulfate

31
Q

Ca(OH)2

A

Calcium hydroxide

32
Q

magnesium dichromate

A

MgCl2O7

33
Q

zinc phosphate

A

Zn(PO4)2

34
Q

Cobalt (III) sulfide

A

Co2(SO3)3

35
Q

chromium (III) nitrate

A

Cr(NO3)3

36
Q

magnesium phosphide

A

Mg3P2

37
Q

lead (IV) sulfide

A

PbS2

38
Q

ammonium carbonate

A

(NH4)2CO3

39
Q

lead (II) nitrite

A

Pb(NO2)2

40
Q

tin (II) cyanide

A

Sn(CN)2

41
Q

aluminum acetate

A

Al(C2H3O2)3

42
Q

potassium permanganate

A

KMnO4

43
Q

potassium nitride

A

K3N

44
Q

nickel (III) chloride

A

NiCl3