metals, nonmetals & metalloids
TRANSCRIPT
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METALS, NONMETALS & METALLOIDS
Classifying elements on the Periodic Table
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3 DIFFERENT TYPES OF ELEMENTS
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LOCATION
• Metals: On the left and in the middle
• Metalloids: On the stair-step
• Nonmetals: On the right
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FOR THE FOLLOWING CHARACTERISTICS, PREDICT WHICH IS BEING DESCRIBED, A METAL OR A NONMETAL.
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LUSTER
•“Shiny-ness”
Metals
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BRITTLE
•Easily broken, fragile
Nonmetals
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DULL
•Not shiny
Nonmetals
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MALLEABLE
•Means “bendable”
Metals
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GOOD CONDUCTOR
•Able to conduct electricity & heat
Metals
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EXIST AS GASES
• These elements are usually found as a gas
Nonmetals
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USUALLY A SOLID
•Found in nature in solid form
•(Mercury is an exception)
Metals
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GOOD INSULATORS
• Keep electricity from flowing (bad conductors)
Nonmetals
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TO REVIEW…
Metals Nonmetals
On the left & middle of the PT On the right of the PT
Luster Dull
Malleable Brittle
Good Conductors Good Insulators (Bad conductors)
Usually Solid Usually Gases
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BUT WHAT ABOUT METALLOIDS?
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METALLOIDS ARE SOMEWHERE BETWEEN METALS AND NONMETALS
• They can have properties of both metals and nonmetals
• Example: They can be shiny, but may also be brittle
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THEY ARE SEMI-CONDUCTORS
• They allow some electricity to pass through, but not all of it
• This makes them useful in computer chips