1. Today in Science
You will Need:
•Pencil, Periodic Table
•Power Notes – Atomic Structure– 2 page 4
sides- Picked up yesterday(Wed.)
•Atomic Structure – Application Part 2 –
Bookshelf-1 page 2 sides

2. Review
•Which subatomic particle in the atom has a
positive charge?
•Which subatomic particles are found in the
nucleus of the atom?
•Of the three major subatomic particle in the
atom, which is the smallest?
•Why are atoms found on the periodic table
neutral….why do they not have any charge?
•Which scientist found that the atom was
mostly empty space?

3. Review
•Which subatomic particle “IDENTIFIES”
which element it represents?
•Which subatomic particle is neutrally
charged and found in the nucleus?
•Which scientist named his model the “Plum
Pudding Model”?
•What does the atomic number on the
periodic table represent about the atomic
structure?

4. Review
•When an atom has more electrons than protons it
has what charge?
•What do you call an atom that does not have the
same number of electrons and protons?
• Protium, Deuterium and Tritium are all forms of
Hydrogen. How do we know they are all Hydrogen?
•When thee are different forms of the same
element with different amounts of neutrons what
do we call them?

5. Review
•Who was the scientist that created the 1st Modern
Atomic Theory?
• What particles does the Atomic Mass represent
on the Periodic Table?
• How many protons does Fluorine have?
• How many electrons does Calcium have if it is a
neutral atom?
•What is the chemical symbol for GOLD?
• Would I add, subtract, multiply or divide to find
the volume of a substance if I knew the mass and
density?

6. Review
•Slicing a piece of Sodium Chloride in half. Physical
or Chemical?
• Decaying trash. Physical or Chemical?
• How many neutrons are in the most common
form of Lithium?
• Most of the MASS in the atom is found in what
part?
• The phase of matter dependends on what?
• The most abundant form of matter in the universe
is _______________?

7. All atoms found on the • Neutral – same # of protons(+)
Periodic Table are and # of electrons(-)
Isotope • Atoms of the same element with
same number of protons and
different number of neutrons.
nucleus nucleus
Proton
Hydrogen has 3 natural
occurring ISOTOPES:
Protium, Deuterium and Protium nucleus Deuterium
Tritium
are Neutro
All ROGEN have n
l
HYD use al Tritium
a
bec oton.
r
1 p

8. Atomic MASS • On the Periodic Table represents a
weighted average of the mass of all
naturally occurring isotopes of each
element. (based on mass and
abundance of each isotope).
• When atoms gain or lose electrons
IONS
they become charged. (number of
protons (+) and electrons (-)
particles are NOT EQUAL)
REVIEW & REFLECT + -

9. Coloring the Periodic • Outline each box in the following
Table way:
• Metalloids – in BLUE
• Nonmetals – in ORANGE
*Textbook pg 196-197 – Use the • Metals – in GREEN
key

10. NONMETALS-
gain electrons
METALS- lose
electrons
Metalloids

11. Atomic Structure • The ATOMIC NUMBER of an
Application element is the number of PROTONS
Can also be # of electrons if
in the center, nucleus of an atom.
neutral • It is the PROTONS that IDENTIFY
which element is on the periodic
table.
• NO TWO elements have the same
ATOMIC NUMBER. (proton count)
#2 – Ac
tually 9
elemen
ts that
start wi
th the
Number of protons + neutrons letter “
C”
Use your Periodic table to complete the
application exercises. You may work as a
group to answer the questions.

13. Homework
Power Notes + Application Part 2–
Please staple and turn in today.
None unless you owe me something
Do You see HOW the periodic table
and the Atomic Structure are
RELATED?