What is Matter?
MatterMatter is what everything ismade of: stuff, material
(it has mass and takes up space)
Matter made of just one type of atom is called an ELEMENTELEMENT, andhas a unique mass to identify it.
You already know many elements!
Copper
Nickel
Aluminum
Neon Gold
Chlorine
Dmitri Mendeleev: Father of the Table
HOW HIS WORKED… Elements in rows
(periods) by increasing atomic weight.
Elements in columns (families) by the way they reacted.
http://upload.wikimedia.org/wikipedia/commons/b/b3/Medeleeff_by_repin.jpg
When the elements are arrangedin order of mass and properties,they form the Periodic Table!
* Note how we abbreviate each element?
Dmitrii Mendeleev (said Mendelayev)came up with this layout idea in 1872.
There are 3 main categories we need to know:Metals, Metalloids, and Non-Metals
Metals:Metals:
• Left/Middle of Periodic Table• Shiny, metallic• Conduct heat and electricity• Malleable and ductile (reshape)
Copper
Nickel
Aluminum
Gold
Silver Mercury
Shade everything to the left of the staircase on your periodic table Orange. If it is touching the staircase do NOT color it. You should also leave Hydrogen blank. (32, 51 & 84 should be left blank)
Key
= Metals
Metalloids:Metalloids:
• Zigzag on Periodic Table where metals and nonmetals meet
• Mostly shiny, metallic looking• Only semi-conductive• Often combined with non-metals
Metalloids are located between metals and nonmetals. All elements that are touching the staircase (above or below) with the exception of Aluminum are Metalloids.
Color all Metalloids blue, add to your key.
Key
= Metals
= Metalloids
Non-Metals:Non-Metals:
• Right side of Period Table• Not shiny, many are GAS• Not conductive at all• Crumble or break if solid
(non-malleable/ductile)
NeonHelium
Iodine Chlorine Carbon Sulfur