Activating Strategy
Let’s See What you Know…
In our previous lesson we
learned that the pencil is 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 _____.
These particles contain even
smaller particles called
______________.
Matter
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]
Summarizing Strategy
How are atoms and molecules related?
In Part IV of the
Atoms and Molecules
Notes Sheet, complete
the two Quad Clusters.