Hydrogen

1
Hydrogen

• Nonmetal!
• Exists as H2 (diatomic) when alone as an element.
• Most abundant element in universe
• Rare in Earths atmosphere

Click here for hydrogen demo
2
Alkali Metals

• Group 1 (1A)
• Properties of all metals
• Shiny Good Conductors
• Malleable can be hammered into thin sheets.
• Ductile can be drawn into thin wires.

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3
Alkali Metals

• Low density and melting points.
• Soft and silver-white in color
• Highly unstable elements that are not found pure
  in nature.

http//www.microchem.de/elec000a-k.JPG
4
Alkali Metals

• All form 1 ions.
• Most reactive metals on table (low ionization
  energy) and this increases from Li to Fr.

Click here for Alkali Metals Water Demos
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5
Alkaline Earth Metals

• Group 2A
• Higher density and M.P. than Alkali Metals.

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Alkaline Earth vs. Alkali Metals
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7
Alkaline Earth Metals

• More of a silver-metallic color for this group.
• Also highly reactive in nature, but can be stored
  as an element.

http//www.chemsoc.org/viselements/pages/data/gra
phic/ca_data.jpg
8
Alkaline Earth Metals

• All form 2 ions.

Click here for videos on the Alkaline Earth Metals
http//wps.prenhall.com/wps/media/objects/476/488
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9
p-Block Groups

• Groups 13-16 named after the first element.
• Boron Group 13 (3A)
• 3 ions

10
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11
p-Block Groups

• Carbon Group 14 (4A)
• No ion pattern because all have 4 valence
  electrons

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p-Block Groups
Nitrogen Group (-3 ions)
Oxygen Group (-2 ions)
http//wps.prenhall.com/wps/media/objects/602/616
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13
p-Block Groups

• Both Nitrogen and Oxygen are diatomic as elements
  (N2 O2)

14
Halogens

• Group 17 (7A)
• Some are diatomic when alone as an element.

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15
The Super Seven are all diatomic when alone as
elements!
16
Halogens

• Exist as gas, liquids, and solids with distinct
  colors.

17
Halogens

• Most reactive non-metals on table and increases
  from I To F.
• All form 1 ions.
• Most form salts by combining with alkali metals.
  (1 ion with 1 ion)

Click here for Halogen reactivity video
Click here for videos on the Halogens