Chemistry ~ The Basic Concepts ~ Thursday, July 30 th, 2015.
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Transcript of Chemistry ~ The Basic Concepts ~ Thursday, July 30 th, 2015.
Chemistry ~ The Basic Concepts
~
Thursday, July 30th, 2015
Why Chemistry???The fact is that you can't ignore chemistry because chemistry will not ignore you.
The quality of your life is directly affected by Chemistry!
What is Chemistry?....the study of matter, the changes matter undergoes, and the
energy related to those changes
The Scientific Method:
Doing Science is Dynamic!!!
•Make an Observation...Ask a question •Do Background Research•Construct a Hypothesis•Experiment•Analyze Data•Conclude & Communicate
Make an Observation...
QuantitativeQualitativeObjectiveSubjective
Numbers
Fact (not biased)
5 Senses
Opinion
Hypothesis/Experiment
Hypothesis: Educated guess,If/then format
Rules for Recording Data
Table 1: Absorbance of Red Dye at different concentrations
You need to write the DATE you collect the data
Concentration Absorbance (nm)100 g/L 1.38
10 g/L 0.133
1 g/L 0.018
0.1 g/L 0.001
0.01 g/L 0.001
What is the purpose of analyzing data?
Patterns
Graphs
Summaries
What type of graph should I be using?
Bar Graph Line GraphDiscrete Data Continuous Data
(independent data points) ex) How many people eat donuts for breakfast each day in a week
(related data points)ex) The growth of a plant during a week
Percent Data (%) - Pie Graph
What is the purpose of analyzing data?
Patterns Graphs
SummariesRules for Reporting Data
#1 All Tables and Graphs should have a DESCRIPTIVE title#2 No Naked # (units)#3 Both Axis Labeled #4 Legend #5 Graphs are to be 1/2 page or more
with even increments