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Periodic Table. Symbols. The Table. Increase in Atomic Number. 3. 4. 5. 10. 11. 14. 18. 19. 33. 89. Notice how the first few start a new row every 8 atoms. Groups. All in the same group have the same properties. Group 1 Alkali Metals Very reactive. Groups. - PowerPoint PPT Presentation
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Periodic Table
SymbolsElement Symbol Number
Oxygen O
Chromium Cr
Sodium Na
Lead Pb
Iron Fe
Tungsten W
Potassium K
The Table
• Increase in Atomic Number
3 4
11
105
89
33
19
1814
Notice how the first few start a new row every 8 atoms
Groups
• All in the same group have the same properties
Group 1
Alkali
Metals
Very reactive
Groups
• All in the same group have the same properties
Group 2
Alkali
Earth
Metals
Less reactive
Groups
• All in the same group have the same properties
Group 7
Halogens
Poisonous Gases
Cleans Water
Groups
• All in the same group have the same properties
Group 8
Noble Gases
Non-reactive
Glow with electricity
Groups• All elements in the same group have
the same propertiesGroup 8
Noble Gases
Non-reactive
Glow with electricity
Group 7
Halogens
Poisonous Gases
Cleans Water
Group 2
Alkali
Earth
Metals
Less reactiveGroup 1
Alkali
Metals
Very reactive
Properties of MetalsNon-metals are mostly gases and liquids and most do not conduct electricity. Dull and brittle.
Metals are mostly Solids and conduct electricity. Shiny and hard. Mix 2 together and form an ALLOY.
Alloys
• Two metals mixed together• Some of both properties• Brass – Copper and Zinc• Bronze – Copper and Tin• Stainless Steel – Chromium and Iron
(and carbon)
Extraction
• Removing metal from it’s ORE
A lot of history is decided by getting Metals from stones
Conduction• All metals conduct
electricity
Moving electrons carry the charge
Metals conduct electricity
The Light bulb shows electrons flow
Non-metals are insulators
No flow of electrons
Summary
• Groups• Metals and non-metals
H/W
• P 188• Q 1 to 6
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