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What is Chemistry?
1. What do you think?
2. Chemistry is the study of the composition, structure, and properties of matter and the changes matter undergoes.
Chemistry
Plant
Sciences
Geology
Environmental
Science
Health and
Medicine Nuclear Chemistry
Physics
Astronomy
Biochemistry
Biology
Terrestrial
and Marine
Chemistry is the “The Central Science”
Ecology
http://htwins.net/scale2/
What does this mean?
Your thinking of your world must develop
from the macro stage to the micro stage.
6 Branches of Chemistry
• Organic chemistry
– study of the
element carbon and
compounds that
contain carbon
• Inorganic chemistry
– the study of
substances not
containing carbon
• Physical chemistry – the study of properties of matter and energy
• Analytical chemistry-
identification of chemicals
• Biochemistry – study
of composition and
changes in living species
• Theoretical chemistry
– computer modeling
THE SCIENTIFIC METHOD
These accidents occur and
discoveries made from them
because of the WAY we do
science using the ....
The 6 STEPS are…
1.State the purpose
of the experiment
Ask why.
What do you want
to know?
2. Gather
background
information…
Research and
learn what has
already been
determined.
For this class, just make an
If / then…statement
3. Form a
hypothesis…
a testable,
possible
explanation.
What do you
think will
happen?
4. Test
hypothesis…
Perform an
experiment, make
observations, or
make a model.
Make a specific
list of what will be
done so it can be
repeated.
5. Analyze data –
make tables,
graphs, etc.
What happened?
What did you see,
hear, or smell?
State your
observations.
0
20
40
60
80
100
1st
Qtr
3rd
Qtr
East
West
North
6. Draw a conclusion
–what do the results
mean?
Was your hypothesis
Correct or incorrect?
Independent, Dependent and Control
Independent Variable:
what is changed by the experimenter…
manipulated
Dependent Variable:
what changes as a result of the change
in the independent variable.
Controlled Variables:
what is held constant throughout the
experiment.
Determine the independent, dependent
and control variables in the data.
How would we display this data?
Remember DRY MIX
Dep
end
ent R
espo
nd
ing
on
Y ax
is Manipulated Independent on X axis
ASSIGNMENT…For Thursday
Google Scientific Method Flow Chart Images,
pick one out that you and partner would like to
make and bring it to class. Think of a problem you
could solve using the Scientific Method and
illustrate it on your flow chart, making sure to label
independent, dependent, and control variables
Here are some examples…
ETC.
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