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- Metalloids
- shiny or dull
- conduct heat & electricity not as well as metals
- have other properties of metal and nonmetals
- Boron, Silican, Germanium, Arsenic, Antimony, Tellurium, Polonium, & Astatine
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- Nonmetals
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Poor conductors of heat & electrcity - Dull
- Low melting & boiling points
- Brittle (if solid)
- Can be solid, liquid, or gas
- Tend to gain electrons
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- Metals Good conductors of heat & electricity
- Malleable - can be hammered into rolled sheets
- Ductile - can be drawn into wires
- Shiny (luster)
- High Melting and Boiling Points
- High Density
- Mostly solids
- Tend to lose electrons
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- Alkali Metals
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Highly Reactive - 1 electron on outer energy level
- Make salts, NaCI, KCI
- Lithium-to treat bi-polar disorder
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- Not found free in nature
- 2 electrons on outer energy level
- gemstones, fireworks,
- magnesium burns brightly
- used as strong and light material for cars, planes, and baseball bats
- magnesium is essential fo photosynthesis
- calcium (in form calcium carbonate) in bones make them strong
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- noble gases normally don't mix with other compounds
- Have 2 or 8 electrons on thier outer energy level
- Uses: neon lights, laser lights
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- Chlorine is the most abundant
- 7 electron on outer energy level
- Bleaches, disinfect water
- Bromine are used as dyes in cosmetics
- Iodine, shiny gray is essential in the production of thyroxin
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- Iron, copper, and silver are examples
- Groups 3 through 12
- 1 or 2 electrons on their outer level
- Less active then Alkali Metals and Alkaline Earth metals
- Many gemstones contain transition metals
- Form brightly colored compounds
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- all radioactive
- #92 and up are man made (synthetic)
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