Download Atomic Structure

Atomic Structure
Subatomic Particles
Particle
proton
Symbol
Charge
Relative
mass
location
Subatomic Particles
Particle
Symbol
Charge
Proton
P+
Positive
+
Neutron
Relative
mass
location
nucleus
Subatomic Particles
Particle
Symbol
Charge
Proton
P+
Positive
+
nucleus
Neutral
nucleus
Neutron
N
Relative
mass
location
Subatomic Particles
Particle
Symbol
Charge
Proton
P+
Positive
+
nucleus
Neutral
nucleus
Neutron
Electron
N
Relative
mass
location
Subatomic Particles
Particle
Symbol
Charge
Relative
mass
location
Proton
P+
Positive
+
nucleus
Neutron
N
Neutral
nucleus
Electron
e-
Negative
-
In orbits
What do atoms look like?
Atom structure
Atomic Number

The number of PROTONS in the nucleus.

Atomic Number = _____________
Atomic number


This determines the PROPERTIES of an
element.
Carbon is carbon because it has 6
protons or an atomic number of ______.
Elements of the periodic table go in
order of increasing ATOMIC NUMBER.
Mass Number

Proton mass= ________
Neutron mass= _______
Electron mass= _______

Mass Number= number of PROTONS+


number of NEUTRONS.
On the periodic table, info looks like
this:
6
C
Carbon
12.0107
Tips for analyzing an atom

How do you know how many protons
an atom has?

Look for the ATOMIC NUMBER on the
PERIODIC TABLE.
How to know the number of
electrons

Neutral atoms have the same number of
PROTONS (+) and ELECTRONS (-)
How to find the number of
neutrons


Find your MASS NUMBER
Find the number of PROTONS
 Mass
# - # Protons= # Neutrons