DO NOW:
What makes up the world?
What’s inside every
phsyical thing we see?
REMINDERS FOR THE WEEK
Homework is due on FRIDAY
 Do Now Sheet is due on FRIDAY
 Small Quiz on Material from the week on
FRIDAY

OUR FIRST UNIT: CHEMISTRY!
Objective for the day: You will be able to
understand what an atom is and understand the
different subatomic particles.
 Quiz on Friday on material from the week!

LET’S THINK ABOUT THIS:
HOW BIG IS AN ATOM?
Take this piece of paper and discuss with your
partner how many times you think you’d have to
cut the paper in half in order to make it the size
of an atom.
 You can fold the paper


What are your guesses?
GUIDED NOTES
For guided notes, fill in the blanks on your notes
with the BOLDED and UNDERLINED words on
the board.
 THIS IS THE IMPORTANT STUFF
 Listen carefully, pay close attention

WHAT IS MATTER?
Matter is anything that has MASS and
takes up SPACE
WHAT ARE ATOMS?
MATTER is made of ATOMS.
 ATOMS are the basic building blocks of life.
They are the SMALLEST part of matter.

WHAT DO YOU SEE?
.
This dot holds over
4 million atoms!
**ATOM FACTS**

It would take you 500 years to count the number
of atoms in one grain of salt!
One strand of
human hair is one
million atoms in
width.

SUBATOMIC PARTICLES


Atoms are made of THREE basic SUBATOMIC
PARTICLES (parts)
They are:
 Protons
Neutrons
 Electrons

SUBATOMIC PARTICLES


The neutrons and protons are located in the
NUCLEUS which is in the center of the atom
The electrons are located around the NUCLEUS

Neutrons have a ____________ charge. They are
LARGER.

Protons have a ______________ charge. They are
LARGER

Electrons have a ______________ charge. They are
SMALLER.
WHERE IS MOST OF THE MASS/WEIGHT OF
THE ATOM?
QUICK VIDEO:

Video:
http://app.discoveryeducation.com/techbook2:conc
ept/view/guidConceptId/0bb0abd6-ff2a-469e-bce4855bb83590cc/guidUnitId/e88cf548-8791-48c39cd8-8cac59c61950#/tab=model-lessontab&page=1&subTab=session2
SUBATOMIC PARTICLES

The number of PROTONS and ELECTRONS
are equal! So, the atom always has a NEUTRAL
charge.
PRACTICE!:
GROUP WORK
Now, practice on your own.
 Low voices to discuss answers
 We will go over the answers together!

EXIT TICKET
1.
2.
What is the building block of all matter on Earth?
List the three things are atoms made of
1.
2.
3.
What is the charge of each of these subatomic particles?
Where are each of these subatomic particles located in
the atom?
Which two subatomic particles always equal each
other?