Chemistry

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Chemistry

• -the study of matter, its properties, and the
  changes it undergoes.

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Branches of Chemistry

• Organic
• Inorganic
• Analytical
• Physical
• Biochemisty
• Nuclear

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Science is a Process

• Science is more a way of doing things or solving
  problems than a collection of equations or ideas.
• There is no need to rediscover the wheel, so
  discoveries are recorded to the known body of
  knowledge.

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• Pure Science
• is concerned with making discoveries
• Applied Science
• uses the discoveries to make new products or
  procedures

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The Scientific Method

• a systematic method of finding the answer to a
  question or a problem
• not just used by scientists

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1. State the problem

• lends direction to the problem solving
• provides a way to tell if the problem has been
  solved

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2. Conduct Research

• gather as much information as possible beforehand
• what is already known?

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3. Form a Hypothesis

• Make an educated guess as to the what or why of
  the problem

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4. Conduct an Experiment

• test the hypothesis
• one or more conditions should be controlled
• held the same in all tests
• only test one variable at a time

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5. Analyze the results

• look at the data or observations collected during
  the experiment

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6. Make a conclusion

• does the data fit the hypothesis?
• yes? hypothesis was correct
• no? modify the hypothesis and retest

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The short form

• state problem
• look
• guess
• test
• check
• make conclusion

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Observations

• What, not Why
• Simply a record of what was observed

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Conclusions

• Why, not What
• A statement of the cause behind the event

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Theory

• an explanation of how or why that has been
  successfully tested
• can never be proven, are accepted as true
• provide predictive powers

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Law

• a summary of the results of many observations or
  experiments
• describes what, doesnt explain how or why
• often math equations

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Dont forget to return your Lab Safety
Contracts signed by yourself and a parent or
guardian as soon as possible.