Chapter 1 Introduction to Chemistry

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Chapter 1Introduction to Chemistry

• Ms. Wang
• Lawndale High School

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Matter

• Anything that has mass and occupies space

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Chemistry

• The study of the composition of matter and the
  changes that matter undergoes

• Chemistry affects all aspects of life and most
  natural events

• There are 5 main areas of study in chemistry

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1. Organic Chemistry

• study of all chemicals containing carbon
• Example Athletes inhale chemicals developed by
  organic chemists to control symptoms of asthma

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2. Inorganic Chemistry

• study of chemicals that generally do not contain
  carbon
• Example Explain how a lack of calcium can affect
  the growth and repair of bones

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3. Biochemistry

• study of processes that take place in organisms
• Example Study how the energy used for the
  contraction of muscles is produced and stored

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4. Analytical Chemistry

• study that focuses on the composition of matter
• Example develop tests to detect chemicals in the
  blood

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5. Physical Chemistry

• study that deals with the rate of how fast matter
  undergoes a change
• Example study factors that affect breathing
  rates during exercise

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Why Study Chemistry?

• Chemistry can be useful in explaining the natural
  world and preparing people for career
  opportunities

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Why Study Chemistry?

• Chemistry supplies the medicines, materials, and
  technology that doctors use to treat their
  patients

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Why Study Chemistry?

• Chemists play an essential role in finding ways
  to conserve, produce, and store energy

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Why Study Chemistry?

• Chemists help to develop more effective ways to
  protect crops

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Why Study Chemistry?

• Chemists help to identify pollutants and prevent
  pollution

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The Scientific Method

• A logical, systematic approach to the solution of
  a scientific problem

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Step 1 Make Observations

• an observation usually leads to a problem or
  question

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Step 2 Formulate A Hypothesis

• propose an explanation for your observation

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Step 3 - Experiment

• a procedure used to test a hypothesis

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Step 4 - Analyze

• Record the results of the experiment

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Step 5 - Conclusion

• Compare the hypothesis to the experiments
  conclusion

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HOMEWORK

• Page 34 s 53, 54, 59-62, 67, 71