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adavis6
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what is chemistry? (2 things)
- 1. The study of matter and its transformations
- 2. The study of connections between molecular and macroscopic events
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why study chemistry? (4 things: Lanie grabs delicious apple)
- learn fundamental physical models
- gain technical perspective on current events
- develop problem solving skills
- appreciate life's little mysteries
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The scientific method is:
a systematic procedure for solving problems and exploring natural phenomena
Observations(data)
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Observations (data) are the foundation of the scientific method
True or False
True
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Data is:
- qualitative or quantitative
- and most useful when collected under controlled conditions.
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Experiments must be repeatable and reproducible
True or False
true
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Natural Laws-
do what?
apply when?
are what?
- compactly summarize patterns in a large amount of data
- often apply only under special conditions
- are descriptions of nature, not facts or explanations.
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Does a useful Hypothesis have to be testable? Y/N
Yes
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What are tentative explanations designed to guide experimentation?
Hypotheses
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When Hypotheses conflict with experiments, they must be- rejected or corrected
either
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What is a well tested explanation for experimental data based on a set of hypotheses?
Theory
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When must a theory be discarded or refined?
when it can't explain new experimental results.
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What are the three aspects of scientific theories?
- philosophical, mathematical, and empirical.
- UNDERSTAND ALL THREE OR RISK MISUSING THE THEORY
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a good theory does what five things? (ellie is after some cavemen)
- -explains currently available data
- -is as simple as possible (but no simpler!)
- -accurately predicts results of future experiments
- -suggests new lines of work and new ways to think
- -clearly shows underlying connections
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Many important scientific discoveries were not arrived at using the scientific method, but with serendipity and intuition. True or False
True
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Examples of discoveries arrived at with serendipity and intuition.
- vulcanization of rubber by Charles Goodyear
- Teflon
- Plastics
- Saccharin
- Microwave ovens
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