Chemistry

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Chemistry

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Chemistry

  1. 1. Chemistry<br />
  2. 2. What is Chemistry?<br />Chemistry is the science of the composition and structure of matter and of the changes that matter undergoes.<br />Chemistry is everything around us, the wall, your paper, you pen, plants and animals; all constitute the matter of the universe.<br />The materials around us are composed of exceedngly small particles called Atoms. <br />The precise arrangement of these atoms into moleculesor more complicated structures account for the many different characteristics of materials.<br />
  3. 3. Definitions<br />Atom – an extremely small particle of matter.<br />Molecule – a group of atoms that are chemically bonded together.<br />
  4. 4. Experiment &Explanation (The heart of chemical research)<br />Experiment - the observation of a natural phenomena carried out in a controlled manner so that the results can be duplicated and rational conclusions made.<br />Series of experiments.<br />Regularities or patterns NOT found<br />Regularities or Patterns found<br />More Experiments<br />Law – a statement or mathematical equation about a regularity or pattern within nature.<br />
  5. 5. Experiment &Explanation (The heart of chemical research)<br />Explanation – help organize knowledge and predict outcomes of future events.<br />Hypothesis – a tentative explanation of some regularity of nature.<br />Many experiments and tests.<br />Theory – a tested explanation of basic natural phenomena.<br />Note: Theories cannot be proven absolutely, there may be limits found later with further experiments.<br />
  6. 6. Scientific Method<br />Experiments<br />Results<br />Hypothesis<br />Positive Results<br />Negative Results<br />Experiments<br />Theory<br />Experiments<br />

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