Mr Brooks started explaining about the periodic table... See the notes below:
CHEMISTRY
NOTES
CHAPTER 6
Groups:
Þ
Vertical Rows
Þ
Have similar characteristics
Periods:
Þ
Horizontal Rows of periodic table
Þ
Periods do not have similar characteristics, but
the electrons will be in the same energy level
Representative
vs. Transition Elements
There are two sets of groups.
The group A
elements are called the representative elements.
Þ
They have electrons in the S and P orbitals or
both
The group B
elements are the nonrepresentative elements.
Left of the zig-zag
line:
Metals:
Þ
Loose electrons
Þ
Make positive ions
Þ
Usually good conductors of electricity of heat
Þ
Have malleability (can be measured into a sheet)
o
Al: if you bend Al, it does not just bend… it is
actually small fractures
o
In the 1950’s they
used Al wiring throughout the house…. Every time they bend the wire, it would
fracture. This would cause a spark, a fire.
Metalloids:
Þ
Have characteristics of metal and nonmetal.
Right of the line:
NON-METALS
Þ
They will gain electrons and form negative ions
PERIODIC TABLE AT ROOM TEMPERATURE
SOLID: Most of the elements at room
temperature will be a solid.
LIQUID: Only 2 elements on the
periodic table will be a liquid at room temperature:
Þ
Mercury
Þ
Bromine: Liquid Bromine: is usually
They have
antiseptic qualities
BOTTOM OF PERIODIC TABLE:
Lanthanide
Series: Starts with Cerium Ce ------- Lu
Actinide
Series: Are Radioactive Th -------------Lr
Cool Info:
Fermium: Is named after the man who
split the atom
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