States of matter; solids. Metals vs. nonmetals. Which elements are metals?. Metals are on the left side of the periodic table. Solids at room temp. except Mercury. Shiny “metallic” . High Density. Properties of METALS. Malleable . Ductile. Conductor of electricity.
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States of matter; solids
Metals vs. nonmetals
Which elements are metals?
Metals are on the left side of the periodic table
Solids at room temp. exceptMercury
Properties of METALS
Conductor of electricity
Conductor of heat
All the elements shaded in yellow have those metallic properties.
Some common uses of metals are
in sprinkler-systems. (Bismuth)
in roadflares; the red color. (Strontium)
in medicine; absorbs harmful x-rays & gamma rays (Barium)
The elements in Group 1 are the absolute best of all metals!
They are called ALKALIMETALS
Which elements are NONMETALS?
Nonmetals are on the right side of the periodic table
Mostly gases at room temp.
Dull; not shiny
Properties of NONMETALS
Brittle; not malleable
All the elements shaded in blue have those nonmetallic properties.
Some common uses of nonmetals are
in dandruffshampoos (Selenium)
in toothpaste (Fluorine)
in rayon (Sulfur)
The elements in Group17 are the absolute best of all nonmetals!
(or the worst of all metals!)
Group 17 elements are called HALOGENS
What about the green elements?
These are called METALLOIDS.
They are the transition elements between metals and nonmetals
Some are shiny (aluminum)
Some are dull (arsenic)
Properties of METALLOIDS
Most are considered semi-conductors
Some common uses of metalloids are
in aerospace (strong but light) (Boron)
in infrareddetectors (Germanium)
in ratpoisoning (Arsenic)
Pick one element that interests you; metal or nonmetal!
You are going to adopt an element and we will do a research project