Scientific Method
An explanation of what could occur
How many branches of chemistry are there?
10
How many SF does this have:
14
2!
1 & 4
What is the study of Chemistry?
Everything around us!
Accuracy is HOW CLOSE a measurement is to a true accepted value.
How Accurate are these Numbers?
7.9, 7.8, 7.9, 8.0, 8.1, 7.8
They are Accurate (they are pretty close to each other)
A set of controlled observation
Experiment
What do an Organic Chemists do?
How many SF does this have:
6.70 X 107
3!
6, 7 & 0
*Zero in this case because it is part of the "M"*
What is the Composition of Chemistry?
Matter or Atoms!
Precision is the AGREEMENT between numbers
Is this precise?
2.8, 7.8, 6.2, 1.1, 9.7
NO! they don't agree with each other
After the experiment is finished and data is collected you form this
A Conclusion
What do Physical Chemists do?
They study the behavior and changes of matter and related energy changes
How many SF does this have:
570,003
6!
5, 7, 0, 0, 0, & 3
*Even though there are zeros they are captive so they count as SF!*
What sides do the Independent and Dependent Variable go on?
Independent goes on the Left
Dependent goes on the Right
Convert this problem from Kelvin to Celcius:
Hint: TK=TC-273
47 K
-200
TK=TC-273
-200=47-273
What is Quantitative Data (N)?
A Numerical measurement
What is a Polymer Chemist?
Someone who studies Polymers and Plastics
How many SF does this have:
156,0000
4!
*The Underline is like a STOP sign! That is the last SF*
What is PURE Research (or Pure Science)?
Curiosity!
*Gaining knowledge for the sake of knowing*
Scientific Notation:
Significant Numbers go in the ______ place
M
M X 10x
What is Qualitative Data (L)
A description or observation of an object (No Numbers)
What kind of chemist studies Chemical Interactions?
Theoretical Chemists
How many SF does this have:
7.89272936
9!
*Count from the last 6 to the decimal point if that number is bigger than 0 keep counting!*
What is APPLIED Research (or applied science)?
Solving Problems!
Where do POSITIVE POWERS move the Exponent?
Where do NEGATIVE POWERS move the Exponent?
Positive move to the RIGHT
Negative Move to the LEFT