Activating Strategy
Let’s See What you Know…
In our previous lesson we
learned that the pencil is
matter
made of ______?
If you look closely at the tip of a
sharpened pencil, you will see
that it is made of a specific type
of matter called graphite.
The image shows a close up
picture of the graphite. The
graphite is made up of even
smaller particles called atoms
_____.
These particles contain even
smaller particles called
protons,
neutrons, electrons
_____________________
How are atoms and
molecules related?
Standard: S8P1a. Distinguish
between atoms and molecules
Adapted from www.middleschoolscience.com 2008
S8P1a. Atoms & Molecules
Name: ___________________
Essential Question: How are atoms and molecules related?
Part I
Atoms:
__________________________________________________________________________
Use the Atoms and
Molecules Notes
sheet when
instructed
__________________________________________________________________________
Elements:
__________________________________________________________________________
__________________________________________________________________________
Molecules:
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
Part II
Identify whether the following is an atom, element, or molecule. Explain your answer.
_______________________ _______________________ _________________________
Draw and label your own atom, element, and molecule.
Image are from http://www.chem4kids.com
•A small particle that
makes up Matter
•Consists of Protons (+),
Electrons (-), and Neutrons (N)
*Write information on the Notes Sheet
How big is an atom?
www.scaleofuniverse.com
• Consists of only
one kind of atom,
• Cannot be broken
down into a simpler
type of matter
*Write information on the Notes Sheet
• A molecule consists of two or
more atoms of the same
element, or different elements,
that are chemically bound
together.
• In the animation above, two
nitrogen atoms (N + N = N2)
make one Nitrogen molecule .
*Write information on the Notes Sheet
Distributed Summarizing
Complete Part II of the Atoms
and Molecules Notes Sheet.
When instructed, compare
your responses to a seat
partner.
Applying Atoms,
Elements, Molecules
and the Law of
Conservation of Matter
[Mass]
A Chemical Formula is a representation of a
substance using symbols for its essential elements.
A Chemical Formula represents in symbols and numbers
the amount of atoms in a specific type of matter.
Look at Part III of your Atoms and Molecules Notes
Sheet. Let’s examine a few Chemical Formulas.
H2O = Water
How many atoms are there in H2O?
There are 2 Hydrogen Atoms and 1 Oxygen Atom
Answer numbers 4, 5, and 6 on Part III of the Atoms and
Molecules Notes Sheet
A Chemical Equation is a symbolic representation of
what happens when atoms react with each other
Review: What is the Law of
Conservation of Matter?
The Law of Conservation of Matter
[Mass] states that matter cannot be
created or destroyed. It changes form.
A Chemical Equation can illustrate
the Law of Conservation of Matter.
Let’s see how
Law of Conservation of Matter [Mass]:
The Mass of the Reactants is EQUAL to the Mass of the Products
Law of Conservation of Matter
[Mass]
Law of Conservation of Matter [Mass]
See the Curriculum Map
for additional tasks to
reinforce Atoms, Elements,
Molecules and the Law of
Conservation of Matter
Summarizing Strategy
How are atoms and molecules related?
In Part IV of the
Atoms and Molecules
Notes Sheet, complete
the two Quad Clusters.