What is an ELEMENT?oA substance

composed of a single kind of atom.

oCannot be broken down into another substance by chemical or physical means.

What is a COMPOUND?

oA substance in which two or more different elements are CHEMICALLY bonded together.

Structure of ElementsoMonoatomic

elements composed of individual discrete (atoms) He

oDiatomic elements composed of molecules made up of two atoms that are bonded together H2

Structure of ElementsoMetals – many atoms

held together by metallic bonds (Cu)

oOther giant molecular or network structures (carbon)

Non metals Transition metals

Metalloids Halogens

Post Transition metalsAlkali Metals Noble GasesAlkaline Earth Metals

Hhydrogen

Lilithium

Nasodium

Kpotassium

Rbrubidium

Cscaesium

Frfrancium

Beberyllium

Mgmagnesium

Cacalcium

Srstrontium

Babarium

Raradium

Scscandium

Yyttrium

Tititanium

Zrzirconium

Hfhafnium

Vvanadium

Nbniobium

Cr

chromium

Momolybdenum

Mnmanganese

Tctechnetium

Feiron

Ruruthenium

Cocobalt

Rhrhodium

Ninickel

Pdpalladium

Cucopper

Agsilver

Znzinc

Cdcadminium

Tatantalum

Wtungsten

Rerhenium

Ososminium

Iriridium

Ptplatinum

Augold

Hgmercury

Bboron

Sisilicon

Gegeramanium

Asarsenic

Sbantimoney

Tetellurium

Popolonium

Ccarbon

Pphosphorous

Nnitrogen

Ooxygen

Ssulphur

Seselenium

Alaluminium

Gagalium

Inindium

Tlthallium

Sntin

Pblead

Bibismuth

Ffluorine

Clchlorine

Brbromine

Iiodine

Atastatine

Hehelium

Neneon

Arargon

Krkrypton

Xexenon

Rnradon

Lanthanoids (rare earth)

Actinoids(rare earth)

1 2

3

11

19

37

55

LaLanthanum

Cecerium

Prpraseodymium

Pmpromethium

Smsamarium

Eueuropium

Gdgadolinium

Tbterbium

Dydysprosium

Hoholmium

Reerbium

Tmthulium

Ybytterbium

Lulutetium

Ndneodymium

Acactinium

Paprotactinium

Uuranium

Npneptunium

Puplutonium

Amamericium

Cmcurium

Bkberkelium

Cfcalifornium

Eseinsteinium

Fmfermium

Mdmendelevium

Ththorium

Nonobelium

Lrlawrencium

87

4

12

20

38

56

88

39

2221

40

72

23

41

73

24

42

74

25

43

74

26

44

76

27

45

77

28

46

78

29

47

79

30

48

80

31

49

81

5

13

32

50

82

6

14

33

51

83

7

15

34

52

84

8

16

35

53

85

9

17

36

54

86

10

18

57 58 59 60 61 62 63 64 65 66 67 68 69 70 71

89 90 91 92 93 94 95 96 97 98 99 100 101 102 103

Tatantalum

LaLanthanum

57

Acactinium

89

Rfrutherfordium

Dbdubnium

Sgseaborgium

Bhbohrium

Hshassium

Mtmeitnerium

Dsdarmstadtium

Rgroentgenium

Cncopernicium

104 105 106 107 108 109 110 111 112

Uutununtrium

Flflerovium

Uupununpentium

113 114 115

Lvlivermorium

116

Uusununseptium

Uuoununoctium

117 118

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From wikipedia

Properties of Metals

• Metals are good conductors of heat and electricity.

• Metals are shiny.• Metals are ductile (can be

stretched into thin wires).• Metals are malleable (can be

pounded into thin sheets).• A chemical property of metal

is its reaction with water which results in corrosion.

Properties of Non-Metals

• Non-metals are poor conductors of heat and electricity.

• Non-metals are not ductile or malleable.

• Solid non-metals are brittle and break easily.

• They are dull.• Many non-metals are

gases.

Sulfur

Properties of Metalloids

• Metalloids (metal-like) have properties of both metals and non-metals.

• They are solids that can be shiny or dull.

• They conduct heat and electricity better than non-metals but not as well as metals.

• They are ductile and malleable.

Silicon