Exam3 - Exam#1 100 points total 1 Indicate whether the...

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Exam #1 100 points total 1. Indicate whether the following are most likely a pure substance, a homogenous mixture or a heterogenous mixture (5 points) a. Potting soil b. Non-iodized table salt c. A paperclip d. Gatoraid e. The gold in Fort Knox 2. Indicate whether the following represent physical or chemical changes (5 points) a. Toasting a bagel until it is nice and brown b. Melting butter on a hot bagel c. Burning gasoline in your car engine d. Recycling glass e. Making wine 3. In the following diagram, the particles from a cathode ray tube are coming directly towards you. In which direction would you expect the particles to be deflected in response to the magnetic field? ( write the appropriate letter ). (5 points) 4. For the following elements, write down the most likely ionic form (5 points) a. Br b. Al c. Se d. K e. Ca 5. Write the balanced chemical equation for the combustion of hexanol (C 6 H 14 O) (5 points)
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6. Magnesium can burn in air to produce Magnesium oxide. Write the balanced chemical equation for this reaction and predict two other elements which
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