periodic table introduction
DESCRIPTION
A set of slides created to teach Periodic Table Introduction to learners at Bishops Diocesan College in Cape Town.TRANSCRIPT
THE PERIODIC TABLE
K WARNE -GRADE 10
Increasing atomic number (Z)
1 2 3 4 5 6 7 8 9 10 11
H He Li Be B C N O F Ne Na
Very
reactive
gas
Un
reactive
gas
Very
Reactive
metal
Very
reactive
Gas
Un
reactive
gas
Very
reactive
metal
THE PATTERN BEGINS TO REPEAT
AFTER EVERY 8 ELEMENTS!
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The Periodic TableInteractive Periodic Table; www.ptable.com
I II <--GROUP NUMBERS--> III IV V VI VII 0
1 2
H He
1 KEY 4
3 4 Atomic number 3 5 6 7 8 9 10
Li BeLi Symbol B C N O F Ne
7 9 Mass number 7 11 12 14 16 19 20
11 12 13 14 15 16 17 18
Na Mg Al Si P S Cl Ar
23 24 27 28 31 32 35.5 40
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
39 40 45 48 51 52 55 56 59 59 64 65 70 73 75 79 80 84
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
86 88 89 91 93 96 99 101 103 106 108 112 115 119 122 128 127 131
55 56 57 * 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86
Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
133 137 139 179 181 184 186 190 192 195 197 201 204 207 209 210 210 222
87 88 89
Fr Ra Ac
223 226 227
* 58 - 71 Lanthanides58 59 60 61 62 63 64 65 66 67 68 69 70 71
Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
140 141 144 145 150 152 157 159 163 165 167 169 173 175
90 - 103 Actinides90 91 92 93 94 95 96 97 98 99 100 101 102 103
Th Pa U Np Pu AmCm Bk Cf Es Fm Nd No Lr
232 231 238 237 239 243 247 247 252 (252) (257) (258) (259) (260)
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The Periodic TableInteractive Periodic Table; www.ptable.comGI Metals – light grey, react vigorously with water –
release Hydrogen gas – reaction gets more vigorous
as you go down the group.
GVII HALOGENS toxic reactive gases, liquids & solids
– reactivity DECREASES as you go down!
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Periodicity Physical Properties
GROUP I
Soft
grey
/silver
metal
light
(float)
Low Mp
Group II
Metals
silver / grey
Harder than GI
More dense
than GI
density increases
down
Higher Mp & Bp
than GI
G8
Moloatomic
Low Bp
Low Densitys
(all gases)
Colourless
Ouderless
GROUP VII
HALOGENS
Diatomic molec.
F2 pale Y gas
Varying colours
Intensity
increases
down
LOW melting &
Bpts
(liqs & Gases,
I2 sublimes)
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The Periodic Table
I VIIIColumns
Groups
= Rows
The number of VALENCE ELECTRONS for any element equals it’s GROUP NUMBER
Periods
II III IV V VI VII<-- Group Numbers -->
• The number of bonds made by an element is called its VALENCY.
• METALS: Valency = number of VALENCE electrons. = GROUP NUMBER.
• Non-metals: Valency = 8 - the group number.
• The number is often written as a MINUS (for non metals) - this represents the
charge formed. (Negative because electrons gained)
1 2 Valence Electrons 3 4 5 6 7 8
1 2 Valency / Bonds 3 4 -3 -2 -1 0
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The Periodic TableColumns - Groups - 8
Non-metals
metals
semi-metalsHalogensI
II III IV V VI VII
Rows - Periods
Nobel/Inert
Gases
Alkali Metals
Alkali-earth
Metals
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Atomic Radius Trends
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Hi -
This is a SAMPLE presentation only.
My FULL presentations, which contain a lot more more slides and other resources, are freely
available on my resource sharing website:
www.warnescience.net(click on link or logo)
Have a look and enjoy!
WarneScience