U14 Atoms
Transcript of U14 Atoms
Essential Natural Science 1Unit 14
Essential Natural Science 1
CONTENTS
RESOURCES
ACTIVITY
LINKS
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Essential Natural Science 1Unit 14
Contents
Atoms and
elements
Atoms
History and characteristicsThe Periodic TableOrganisation
Chemical formulas
Molecules and crystals
Elements found in nature
Hydrogen HeliumNitrogenOxygenCarbonIn the Earth's crustIn sea water
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
HOME
Essential Natural Science 1Unit 14
HOME
Resources
History and characteristicsof atoms
How are elements classified?
How are atoms organised?
What is a chemical formula?
Hydrogen
NitrogenHelium Oxygen Carbon Elements in the Earth's crust
Elements in sea water
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Activity: Atoms and elements
Links
Essential Natural Science 1Unit 14
History and characteristics of atoms
400 BC 19th century Present
Democritus
Atomic theory:Matter is made upof tiny, indivisible units called atoms.
Atom comes from a Greek word, which means “not divisible”.
John Dalton
Matter is made up of indivisible atoms.
Each element is made up of identical atoms.
Atoms combine to form compounds of two or more different elements.
Atoms are made up of smaller particles.
electrons
neutrons
protons
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Essential Natural Science 1Unit 14
How are elements classified?
AlAluminium
13
BBoron
5
SiSilicon
14
CCarbon
6
AsArsenic
33
PPhosphorus
15
NNitrogen
7
PoPolonium
84
TeTellurium
52
SeSelenium
34
SSulphur
16
OOxygen
8
AtAstatine
85
IIodine
53
BrBromine
35
ClChlorine
17
FFluorine
9
HeHelium
2
RnRadon
86
XeXenon
54
KrKrypton
36
ArArgon
18
NeNeon
10
HHydrogen
1
LrLawrencium
103
NoNobelium
102
MdMendelevium
101
FmFermium
100
EsEinsteinium
99
CfCalifornium
98
BkBerkelium
97
CmCurium
96
AmAmericium
95
PuPlutonium
94
NpNeptunium
93
UUranium
92
PaProtactinium
91
ThThorium
90
LuLutetium
71
YbYtterbium
70
TmThulium
69
ErErbium
68
HoHolmium
67
DyDyprosium
66
TbTerbium
65
GdGadolinium
64
EuEuropium
63
SmSamarium
62
PmPromethium
61
NdNeodymium
60
PrPraseodymium
59
CeCerium
58
RgRoentgenium
111
DsDarmstadtium
110
MtMeitnerium
109
HsHassium
108
BhBohrium
107
SgSeaborgium
106
DbDubnium
105
RfRutherfordium
104
AcActinium
89
RaRadium
88
CsCesium
55
BiBismuth
83
PbLead
82
TiThallium
81
HgMercury
80
AuGold
79
PtPlatinum
78
IrIridium
77
OsOsmium
76
ReRhenium
75
WTungsten
74
TaTantalum
73
HfHafnium
72
LaLanthanum
57
BaBarium
56
SbAntimony
51
SnTin
50
InIndium
49
CdCadmium
48
AgSilver
47
PdPalladium
46
RhRhodium
45
RuRuthenium
44
TcTechnetium
43
MoMolybdenum
42
NbNiobium
41
ZrZirconium
40
YYttrium
39
SrStrontium
38
GeGermanium
32
GaGallium
31
ZnZinc
30
CuCopper
29
NiNíckel
28
CoCobalt
27
FeIron
26
MnManganese
25
CrChromium
24
VVanadium
23
TiTitanium
22
ScScandium
21
CaCalcium
20
MgMagnesium
12
FrFrancium
87
RbRubidium
37
KPotassium
19
NaSodium
11
BeBeryllium
4
LiLithium
3
6
7
1
2
3
4
5
7
6
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
The Periodic Table
of Elements
CLICK ON GREEN BUTTONS TO LEARN MORE
LANTHANIDES
ACTINIDES
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Essential Natural Science 1Unit 14
AlAluminium
13
BBoron
5
SiSilicon
14
CCarbon
6
AsArsenic
33
PPhosphorus
15
NNitrogen
7
PoPolonium
84
TeTellurium
52
SeSelenium
34
SSulphur
16
OOxygen
8
AtAstatine
85
IIodine
53
BrBromine
35
ClChlorine
17
FFluorine
9
HeHelium
2
RnRadon
86
XeXenon
54
KrKrypton
36
ArArgon
18
NeNeon
10
HHydrogen
1
LrLawrencium
103
NoNobelium
102
MdMendelevium
101
FmFermium
100
EsEinsteinium
99
CfCalifornium
98
BkBerkelium
97
CmCurium
96
AmAmericium
95
PuPlutonium
94
NpNeptunium
93
UUranium
92
PaProtactinium
91
ThThorium
90
LuLutetium
71
YbYtterbium
70
TmThulium
69
ErErbium
68
HoHolmium
67
DyDyprosium
66
TbTerbium
65
GdGadolinium
64
EuEuropium
63
SmSamarium
62
PmPromethium
61
NdNeodymium
60
PrPraseodymium
59
CeCerium
58
RgRoentgenium
111
DsDarmstadtium
110
MtMeitnerium
109
HsHassium
108
BhBohrium
107
SgSeaborgium
106
DbDubnium
105
RfRutherfordium
104
AcActinium
89
RaRadium
88
CsCesium
55
BiBismuth
83
PbLead
82
TiThallium
81
HgMercury
80
AuGold
79
PtPlatinum
78
IrIridium
77
OsOsmium
76
ReRhenium
75
WTungsten
74
TaTantalum
73
HfHafnium
72
LaLanthanum
57
BaBarium
56
SbAntimony
51
SnTin
50
InIndium
49
CdCadmium
48
AgSilver
47
PdPalladium
46
RhRhodium
45
RuRuthenium
44
TcTechnetium
43
MoMolybdenum
42
NbNiobium
41
ZrZirconium
40
YYttrium
39
SrStrontium
38
GeGermanium
32
GaGallium
31
ZnZinc
30
CuCopper
29
NiNickel
28
CoCobalt
27
FeIron
26
MnManganese
25
CrChromium
24
VVanadium
23
TiTitanium
22
ScScandium
21
CaCalcium
20
MgMagnesium
12
FrFrancium
87
RbRubidium
37
KPotassium
19
NaSodium
11
BeBeryllium
4
LiLithium
3
6
7
How are elements classified?
1
2
3
4
5
7
6
ROW
Elements with similar chemical properties
Vertical column or GROUP
GO BACK
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
LANTHANIDES
ACTINIDES
Essential Natural Science 1Unit 14
AlAluminium
13
BBoron
5
SiSilicon
14
CCarbon
6
AsArsenic
33
PPhosphorus
15
NNitrogen
7
PoPolonium
84
TeTellurium
52
SeSelenium
34
SSulphur
16
OOxygen
8
AtAstatine
85
IIodine
53
BrBromine
35
ClChlorine
17
FFluorine
9
HeHelium
2
RnRadon
86
XeXenon
54
KrKrypton
36
ArArgon
18
NeNeon
10
HHydrogen
1
LrLawrencium
103
NoNobelium
102
MdMendelevium
101
FmFermium
100
EsEinsteinium
99
CfCalifornium
98
BkBerkelium
97
CmCurium
96
AmAmericium
95
PuPlutonium
94
NpNeptunium
93
UUranium
92
PaProtactinium
91
ThThorium
90
LuLutetium
71
YbYtterbium
70
TmThulium
69
ErErbium
68
HoHolmium
67
DyDyprosium
66
TbTerbium
65
GdGadolinium
64
EuEuropium
63
SmSamarium
62
PmPromethium
61
NdNeodymium
60
PrPraseodymium
59
CeCerium
58
RgRoentgenium
111
DsDarmstadtium
110
MtMeitnerium
109
HsHassium
108
BhBohrium
107
SgSeaborgium
106
DbDubnium
105
RfRutherfordium
104
AcActinium
89
RaRadium
88
CsCesium
55
BiBismuth
83
PbLead
82
TiThallium
81
HgMercury
80
AuGold
79
PtPlatinum
78
IrIridium
77
OsOsmium
76
ReRhenium
75
WTungsten
74
TaTantalum
73
HfHafnium
72
LaLanthanum
57
BaBarium
56
SbAntimony
51
SnTin
50
InIndium
49
CdCadmium
48
AgSilver
47
PdPalladium
46
RhRhodium
45
RuRuthenium
44
TcTechnetium
43
MoMolybdenum
42
NbNiobium
41
ZrZirconium
40
YYttrium
39
SrStrontium
38
GeGermanium
32
GaGallium
31
ZnZinc
30
CuCopper
29
NiNickel
28
CoCobalt
27
FeIron
26
MnManganese
25
CrChromium
24
VVanadium
23
TiTitanium
22
ScScandium
21
CaCalcium
20
MgMagnesium
12
FrFrancium
87
RbRubidium
37
KPotassium
19
NaSodium
11
BeBeryllium
4
LiLithium
3
6
7
How are elements classified?
1
2
3
4
5
7
6
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
HHydrogen
atomic symbol
name of the element
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
GO BACK
LANTHANIDES
ACTINIDES
Essential Natural Science 1Unit 14
AlAluminium
13
BBoron
5
SiSilicon
14
CCarbon
6
AsArsenic
33
PPhosphorus
15
NNitrogen
7
PoPolonium
84
TeTellurium
52
SeSelenium
34
SSulphur
16
OOxygen
8
AtAstatine
85
IIodine
53
BrBromine
35
ClChlorine
17
FFluorine
9
HeHelium
2
RnRadon
86
XeXenon
54
KrKrypton
36
ArArgon
18
NeNeon
10
HHydrogen
1
LrLawrencium
103
NoNobelium
102
MdMendelevium
101
FmFermium
100
EsEinsteinium
99
CfCalifornium
98
BkBerkelium
97
CmCurium
96
AmAmericium
95
PuPlutonium
94
NpNeptunium
93
UUranium
92
PaProtactinium
91
ThThorium
90
LuLutetium
71
YbYtterbium
70
TmThulium
69
ErErbium
68
HoHolmium
67
DyDyprosium
66
TbTerbium
65
GdGadolinium
64
EuEuropium
63
SmSamarium
62
PmPromethium
61
NdNeodymium
60
PrPraseodymium
59
CeCerium
58
RgRoentgenium
111
DsDarmstadtium
110
MtMeitnerium
109
HsHassium
108
BhBohrium
107
SgSeaborgium
106
DbDubnium
105
RfRutherfordium
104
AcActinium
89
RaRadium
88
CsCesium
55
BiBismuth
83
PbLead
82
TiThallium
81
HgMercury
80
AuGold
79
PtPlatinum
78
IrIridium
77
OsOsmium
76
ReRhenium
75
WTungsten
74
TaTantalum
73
HfHafnium
72
LaLanthanum
57
BaBarium
56
SbAntimony
51
SnTin
50
InIndium
49
CdCadmium
48
AgSilver
47
PdPalladium
46
RhRhodium
45
RuRuthenium
44
TcTechnetium
43
MoMolybdenum
42
NbNiobium
41
ZrZirconium
40
YYttrium
39
SrStrontium
38
GeGermanium
32
GaGallium
31
ZnZinc
30
CuCopper
29
NiNickel
28
CoCobalt
27
FeIron
26
MnManganese
25
CrChromium
24
VVanadium
23
TiTitanium
22
ScScandium
21
CaCalcium
20
MgMagnesium
12
FrFrancium
87
RbRubidium
37
KPotassium
19
NaSodium
11
BeBeryllium
4
LiLithium
3
6
7
CCarbon
6
It has six protons.
atomic number
How are elements classified?
1
2
3
4
5
7
6
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
carbon atom
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
LANTHANIDES
ACTINIDES
GO BACK
Essential Natural Science 1Unit 14
It has seven protons.
atomic number
nitrogen atom AlAluminium
13
BBoron
5
SiSilicon
14
CCarbon
6
AsArsenic
33
PPhosphorus
15
NNitrogen
7
PoPolonium
84
TeTellurium
52
SeSelenium
34
SSulphur
16
OOxygen
8
AtAstatine
85
IIodine
53
BrBromine
35
ClChlorine
17
FFluorine
9
HeHelium
2
RnRadon
86
XeXenon
54
KrKrypton
36
ArArgon
18
NeNeon
10
HHydrogen
1
LrLawrencium
103
NoNobelium
102
MdMendelevium
101
FmFermium
100
EsEinsteinium
99
CfCalifornium
98
BkBerkelium
97
CmCurium
96
AmAmericium
95
PuPlutonium
94
NpNeptunium
93
UUranium
92
PaProtactinium
91
ThThorium
90
LuLutetium
71
YbYtterbium
70
TmThulium
69
ErErbium
68
HoHolmium
67
DyDyprosium
66
TbTerbium
65
GdGadolinium
64
EuEuropium
63
SmSamarium
62
PmPromethium
61
NdNeodymium
60
PrPraseodymium
59
CeCerium
58
RgRoentgenium
111
DsDarmstadtium
110
MtMeitnerium
109
HsHassium
108
BhBohrium
107
SgSeaborgium
106
DbDubnium
105
RfRutherfordium
104
AcActinium
89
RaRadium
88
CsCesium
55
BiBismuth
83
PbLead
82
TiThallium
81
HgMercury
80
AuGold
79
PtPlatinum
78
IrIridium
77
OsOsmium
76
ReRhenium
75
WTungsten
74
TaTantalum
73
HfHafnium
72
LaLanthanum
57
BaBarium
56
SbAntimony
51
SnTin
50
InIndium
49
CdCadmium
48
AgSilver
47
PdPalladium
46
RhRhodium
45
RuRuthenium
44
TcTechnetium
43
MoMolybdenum
42
NbNiobium
41
ZrZirconium
40
YYttrium
39
SrStrontium
38
GeGermanium
32
GaGallium
31
ZnZinc
30
CuCopper
29
NiNickel
28
CoCobalt
27
FeIron
26
MnManganese
25
CrChromium
24
VVanadium
23
TiTitanium
22
ScScandium
21
CaCalcium
20
MgMagnesium
12
FrFrancium
87
RbRubidium
37
KPotassium
19
NaSodium
11
BeBeryllium
4
LiLithium
3
6
7
How are elements classified?
1
2
3
4
5
7
6
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
NNitrogen
7
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
LANTHANIDES
ACTINIDES
GO BACK
Essential Natural Science 1Unit 14
AlAluminium
13
BBoron
5
SiSilicon
14
CCarbon
6
AsArsenic
33
PPhosphorus
15
NNitrogen
7
PoPolonium
84
TeTellurium
52
SeSelenium
34
SSulphur
16
OOxygen
8
AtAstatine
85
IIodine
53
BrBromine
35
ClChlorine
17
FFluorine
9
HeHelium
2
RnRadon
86
XeXenon
54
KrKrypton
36
ArArgon
18
NeNeon
10
HHydrogen
1
LrLawrencium
103
NoNobelium
102
MdMendelevium
101
FmFermium
100
EsEinsteinium
99
CfCalifornium
98
BkBerkelium
97
CmCurium
96
AmAmericium
95
PuPlutonium
94
NpNeptunium
93
UUranium
92
PaProtactinium
91
ThThorium
90
LuLutetium
71
YbYtterbium
70
TmThulium
69
ErErbium
68
HoHolmium
67
DyDyprosium
66
TbTerbium
65
GdGadolinium
64
EuEuropium
63
SmSamarium
62
PmPromethium
61
NdNeodymium
60
PrPraseodymium
59
CeCerium
58
RgRoentgenium
111
DsDarmstadtium
110
MtMeitnerium
109
HsHassium
108
BhBohrium
107
SgSeaborgium
106
DbDubnium
105
RfRutherfordium
104
AcActinium
89
RaRadium
88
CsCesium
55
BiBismuth
83
PbLead
82
TiThallium
81
HgMercury
80
AuGold
79
PtPlatinum
78
IrIridium
77
OsOsmium
76
ReRhenium
75
WTungsten
74
TaTantalum
73
HfHafnium
72
LaLanthanum
57
BaBarium
56
SbAntimony
51
SnTin
50
InIndium
49
CdCadmium
48
AgSilver
47
PdPalladium
46
RhRhodium
45
RuRuthenium
44
TcTechnetium
43
MoMolybdenum
42
NbNiobium
41
ZrZirconium
40
YYttrium
39
SrStrontium
38
GeGermanium
32
GaGallium
31
ZnZinc
30
CuCopper
29
NiNickel
28
CoCobalt
27
FeIron
26
MnManganese
25
CrChromium
24
VVanadium
23
TiTitanium
22
ScScandium
21
CaCalcium
20
MgMagnesium
12
FrFrancium
87
RbRubidium
37
KPotassium
19
NaSodium
11
BeBeryllium
4
LiLithium
3
6
7
How are elements classified?
1
2
3
4
5
7
6
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
HgMercury
80blue: liquidblack: solidred: gaspurple: man-made
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
LANTHANIDES
ACTINIDES
GO BACK
Essential Natural Science 1Unit 14
How are atoms organised?
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Single atoms Molecules CrystalsSimple molecules
Compound molecules
Simple crystals
Compound crystals
noble gases
helium (He)
oxygen (O2)
water (H2O)
diamond (carbon)
salt (sodium and chlorine)
Essential Natural Science 1Unit 14
How are atoms organised?
Single atoms Molecules CrystalsSimple molecules
Compound molecules
Simple crystals
Compound crystals
noble gases
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
helium (He)
oxygen (O2)
water (H2O)
diamond (carbon)
salt (sodium and chlorine)
Essential Natural Science 1Unit 14
How are atoms organised?
Single atoms Molecules CrystalsSimple molecules
Compound molecules
Simple crystals
Compound crystals
noble gases
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
oxygen (O2)
helium (He) water (H2O)
diamond (carbon)
salt (sodium and chlorine)
Essential Natural Science 1Unit 14
How are atoms organised?
Single atoms Molecules CrystalsSimple molecules
Compound molecules
Simple crystals
Compound crystals
noble gases
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
water (H2O)helium (He)
oxygen (O2) diamond (carbon)
salt (sodium and chlorine)
Essential Natural Science 1Unit 14
How are atoms organised?
Single atoms Molecules CrystalsSimple molecules
Compound molecules
Simple crystals
Compound crystals
noble gases
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
diamond (carbon)
helium (He)
oxygen (O2)
water (H2O) salt (sodium and chlorine)
Essential Natural Science 1Unit 14
How are atoms organised?
Single atoms Molecules CrystalsSimple molecules
Compound molecules
Simple crystals
Compound crystals
noble gases
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
salt (sodium and chlorine)helium (He)
oxygen (O2)
water (H2O)
diamond (carbon)
Essential Natural Science 1Unit 14
CrystalsMolecules
What is a chemical formula? A representation of the elements in a substance
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Simple substances
Compound substances
Crystals
Compound crystals
Essential Natural Science 1Unit 14
CrystalsMolecules
What is a chemical formula? A representation of the elements in a substance
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Simple substance
oxygen molecule
2 oxygen atoms
O2
symbol for the element
Simple substances
number of atoms
Crystals
Compound crystalsCompound substances
Essential Natural Science 1Unit 14
CrystalsMolecules
What is a chemical formula? A representation of the elements in a substance
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Compound substance
water molecule
1 oxygen atom
2 hydrogen atoms
symbols for each element
number of atoms
H2O
Compound substances
Crystals
Compound crystals
Simple substances
Essential Natural Science 1Unit 14
CrystalsMolecules
What is a chemical formula? A representation of the elements in a substance
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Element
carbon
carbon atomssymbol for the element
The chemical formula is the same as the chemical symbol.
Crystals
C
Compound crystals
Simple substances
Compound substances
Essential Natural Science 1Unit 14
CrystalsMolecules
What is a chemical formula? A representation of the elements in a substance
NaCl
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Compound crystals
symbols forthe elements
sodium chloride
chlorine atomsodium atom
proportionof each
Compound crystals
CrystalsSimple substances
Compound substances
Essential Natural Science 1Unit 14
Hydrogen
• gas• the most abundant element in the Universe • colourless• odourless• flammable• the lightest element
Universe
Living things
Earth's crust
H2Hydrogen
Sun
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
83.9 %
63 %
0.22 %
Essential Natural Science 1Unit 14
Helium
• a noble gas • formed by single atoms• lighter than air• not flammable
He
1868 – It was first discovered on the Sun during a solar eclipse.
eclipse
helium
helium balloons
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Universe
Helium
15.9 %
Essential Natural Science 1Unit 14
• the most abundant
gas in the atmosphere • colourless• odourless• inert
Nitrogen
Living things
N2
Atmosphere
nitrates
proteins
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Nitrogen
78 %
1.4 %
Essential Natural Science 1Unit 14
• gas • colourless• odourless• the most abundant element on Earth
Oxygen
21 %
25.5 %
47 %
Oxygen
O2
water
H2Oozone
O3
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Living things
Earth's crust
Atmosphere
Essential Natural Science 1Unit 14
• the basis of all organic compounds• has a unique ability to form compounds
graphite
Carbon
0.03 %
9.5 %
0.19 %
Living things
Earth's crust
Atmosphere
Carbon
C
coal
oilcarbon dioxide
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Essential Natural Science 1Unit 14
2.2 %
Elements in the Earth's crust
CLICK ON THE GREEN BUTTONS TO LEARN MORE
3.5 %
4.5 %
7.9 %
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
Aluminium
Iron
Calcium
Magnesium
28 % Silicon
47 % Oxygen (O)28 % Silicon (Si)7.9 % Aluminium (Al)4.5 % Iron (Fe)3.5 % Calcium (Ca)2.5 % Sodium (Na)2.5 % Potassium (K)2.2 % Magnesium (Mg)
Essential Natural Science 1Unit 14
28 % Silicon
Elements in the Earth's crust
GO BACK
quartz
microchip
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
silica (SiO2)
• solid substance• brown colour• generally found as a compound
Essential Natural Science 1Unit 14
7.9 % Aluminium
Elements in the Earth's crust
micas
feldspars
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
• soft, light metal• light grey colour• only found as a compound• obtained from bauxite
GO BACK
Essential Natural Science 1Unit 14
• metal
• grey colour
• generally found as a compound
4.5 % Iron
Elements in the Earth's crust
pyrite
hematite
steel
iron and oxygen
iron and sulphur iron and carbon
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
GO BACK
Essential Natural Science 1Unit 14
2.2 %
talc
Elements in the Earth's crust
• metal • silver-white colour• found as a compound
olivine
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
GO BACKfireworks
Magnesium
Essential Natural Science 1Unit 14
• metal • greyish white colour• found only as a compound
Elements in the Earth's crust
limestone stalactites
calcite
calcium carbonate
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
3.5 %
Calcium
GO BACK
Essential Natural Science 1Unit 14
Elements in sea water
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
composition of sea water
characteristics of water
Chlorine
Sodium
Potassium
Essential Natural Science 1Unit 14
Elements in sea water
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
• yellowish green gas• denser than air• irritating and toxic• used to disinfect swimming pools
Chlorine
Sodium
Potassium
composition of sea water
characteristics of water
Essential Natural Science 1Unit 14
Elements in sea water
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
• metal• soft • shiny• only found in compounds• reacts easily with oxygen
Sodium
halite
Potassium
Chlorine
composition of sea water
characteristics of water
Essential Natural Science 1Unit 14
Elements in sea water
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
• metal• soft• shiny• only found in compounds
Potassiumpotassium chloride
Chlorine
Sodium
composition of sea water
characteristics of water
Essential Natural Science 1Unit 14
Elements in sea water
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
composition of sea water
Salts Grams per litre
sodium chloride 24
magnesium chloride 5
sodium sulphate 4
calcium chloride 1.1
potassium chloride 0.7
sodium bicarbonate 0.2
others 0.5
TOTAL 35.5
Average chemical composition of sea water
Potassium
Chlorine
Sodium
characteristics of water
Essential Natural Science 1Unit 14
Water
water molecules
(H2O)
hydrogen bridges
68 % waterGO BACK
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
characteristics of water
Essential Natural Science 1Unit 14
HOME
Interactive activity: Atoms and elements
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
OPENOPEN
Essential Natural Science 1Unit 14
Links
HOME
HOME RESOURCES ACTIVITY LINKSCONTENTS
CLOSEBACK
GO TO WEBSITE
The Periodic Table of Elements
GO TO WEBSITE
Atoms and the Periodic Table: What is an element?