1. ATOMIC STRUCTURE If you see a cloud circle that in your foldable.
= IMPORTANT INFORMATION

2. THE ATOM IS MADE OF THREE SUBATOMIC PARTICLES
PROTONS
NEUTRONS
ELECTRONS
THE ATOM HAS A NUCLEUS

3. ELECTRON NOTES BEHIND THE TITLE FLAP
LOCATION: FOUND OUTSIDE OF THE NUCLEUS
CHARGE: e- HAVE A -1 CHARGE
MASS: e- HAS A MASS < 1 AMU
“e- and p+ are the same, unless there’s a charge you’ll lose or gain.”

4. ELECTRON e- = # of p+ when the atom is neutral e- can form ions.
Ions: charged atoms
+Ions=cations (e- are lost)
-Ions= anions (e- are gained)

5. PROTON BEHIND THE TITLE FLAP
LOCATION: FOUND INSIDE OF THE NUCLEUS
CHARGE: p+ HAVE A +1 CHARGE
MASS: p+ HAS A MASS 1 AMU

6. PROTON p+ GIVES THE ELEMENT’S IDENTITY
p+ = atomic # on the periodic table
12  atomic # Mg
 atomic mass

7. NEUTRONS BEHIND THE TITLE FLAP
LOCATION: FOUND INSIDE OF THE NUCLEUS
CHARGE: n0 HAVE A NO CHARGE
MASS: n0 HAS A MASS 1 AMU

8. NEUTRONS n0 HELPS DETERMINE THE MASS OF THE ATOM. n = MASS # - p+
MASS # IS THE WHOLE # OF THE ATOMIC MASS.

9. NUCLEUS BEHIND THE TITLE FLAP
LOCATED IN THE CENTER OF THE ATOM .
NUCLEUS GIVES THE MASS OF THE ATOM.
NUCLEUS HAS A POSITIVE CHARGE.

10. NUCLEUS NUCLEUS MASS = MASS # MASS # = n0 + p+
Isotopes: same # of protons, different # of neutrons.
Mass #
(n0 changes) 108
Ag Ag
Atomic #
(p+ stays the same)