Transcript Positive (charge)

Pop Quiz

Give the latitude and longitude of the
following places
Raleigh North Carolina
 Trenton New Jersey
 Denver Colorado


Draw a picture of the earth and label the 4
hemispheres.
All about Atoms
Earth Science
 What
is matter?
Matter is anything that has
mass and takes up space.
All matter is made up atoms!
…So what Is an ATOM???

http://www.youtube.com/watch?v=NzJPRh
ymoY0
Two major parts of an atom
Nucleus
(not to scale)
Electron
Cloud
Three Major
Sub-Atomic Particles
• Protons
• Neutrons
• Electrons
PROTON
+
(p )
particle with a
positive charge that is
found in the nucleus
THE PROTON
• Fat
(heavy)
+
p
• Positive 
(charge)
• Doesn’t move
(lazy)
NEUTRON (N°)
particle with a
neutral charge that is
found in the nucleus
THE NEUTRON

N
°
• Fat
(heavy)
• Neutral 
(charge)
• Doesn’t move
(lazy)
ELECTRON
(e )
particle with a
negative charge that is
found in a “cloud”
around the nucleus
THE ELECTRON
• Skinny
(very light)
e
• Negative 
(charge)
• Moves a lot
(runs around)
Review: Subatomic Particles
+
p

e-
N
°
Please complete the following
table
Protons Neutrons Electron
Where are
they found?
Nucleus
Nucleus
Electron
Cloud
Mass
Heavy
Heavy
Very Light
Charge
(attitude)
Positive 
Neutral 
Negative 
What is an element?
An element is a substance made up of
only one kind of atom.
 So…all oxygen is made up of oxygen
atoms.
 The boxes on the periodic table represent
a particular kind of element.

How are the elements on Periodic
Table Organized?

The elements on the periodic table are
organized according to their atomic
number.

Ex. Sulfur has an atomic number of 16 to
it comes before Chlorine, which has an
atomic number of 17.
ATOMIC NUMBER
(Z)
the number of
protons in an atom
ATOMIC MASS #
(A)
The total mass of all
of the subatomic
particles in an atom
Atomic Math Challenge
Atomic Number
Symbol
Name
Atomic Mass
protons or __________.
electrons
Atomic number equals the number of ____________
Atomic mass equals the number of ______________
protons
neutrons
+ ____________.
Atomic Math
• The number of protons and
electrons is the same as the
atomic number.
• The number of neutrons is
equal to the atomic mass
minus the number of
protons
10 Elements you need to learn!
Oxygen
 Silicon
 Aluminum Lets make flashcards to help
 Iron
us remember these.
 Calcium
 Sodium
 Potassium
 Magnesium
 Carbon
 Hydrogen
