Download ICTS Science-Chemistry 106 Teacher Certification Test Prep by Sharon Wynne PDF

By Sharon Wynne

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By Sharon Wynne

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Read or Download ICTS Science-Chemistry 106 Teacher Certification Test Prep Study Guide, 2nd Edition (XAM ICTS) PDF

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Extra info for ICTS Science-Chemistry 106 Teacher Certification Test Prep Study Guide, 2nd Edition (XAM ICTS)

Example text

These observations led him to develop the Law of Combining Volumes. Amedeo Avogadrodeveloped the hypothesis that equal volumes of different gases contain an equal numbers of molecules if the gases are at the same temperature and pressure. The proportionality between volume and number of moles is called Avagadro's Law, and the number of molecules in a mole is called Avagadro's Number. Both were posthumously named in his honor. Thomas Graham developed Graham's Law of effusion and diffusion in the 1830s.

Hair should always be tied back and objects should never be placed in the mouth. Food should not be consumed while in the laboratory. Hands should always be washed before and after laboratory experiments. In case of an accident, eye washes and showers should be used for eye contamination or a chemical spill that covers the student’s body. Small chemical spills should only be contained and cleaned by the teacher. Kitty litter or a chemical spill kit should be used to clean spill. For large spills, the school administration and the local fire department should be notified.

Because people often attempt to use scientific evidence in support of political or personal agendas, the ability to evaluate the credibility of scientific claims is a necessary skill in today’s society. In evaluating scientific claims made in the media, public debates, and advertising, one should follow several guidelines. First, scientific, peer-reviewed journals are the most accepted source for information on scientific experiments and studies. One should carefully scrutinize any claim that does not reference peer-reviewed literature.

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