Editing revision 13 of Flame Test Lab
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<u><b>Introduction</b></u><br> <br> The Flame Test Lab is one of the most widely performed 1st year high school chemistry labs. Bohr's model of how atom's absorb energy is being utilized in this lab.<br> <br> Atoms of metals are investigated to "see" what colors are emitted from each metal atom when the atoms are exposed to a infinite number of different energy packets<br> (Planck's explanation of energy). The metal atoms are not in the elementary form but as ions in solution. This change of form does not effect the atom's ability to absorb<br> energy.<br> <br> The actual objective of the lab is to determine the unknown "atom" (actually a solution) from a set of known "atoms".<br> <br> <u><b>Procedures</b></u><br> <br> *There are 7 standard (known) metal "atom" (actually solutions) stations and 1 unknown metal atom station. The unknown atom station is one of the 7 known station. The known metals are potassium,sodium,lithium, calcium,strontium,barium,copper (actually ions in solution). <br> You task is to determine the color (using the 7 colors or a combination of these, so NO CELERY or MAUVE ) emitted from the atom when exposed to a flame (i.e. energy).<br> <br> *At each station is a wire loop that is dipped into the solution (thereby obtaining a small sample of solution) and then exposed to the highest area of the flame (tip of inside flame).<br> You will record ( in your data table) the first color you see. It may require more than one sampling. If you exposed the sample to the flame long enough all solution will be<br> come bright orange in color.<br> <br> *The unknown atom station can not be done before you completed all the known atom solution stations. <br> <u><b>Questions/problems:</b></u> There will be a separate question/problem sheet. <br> <br>
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