Combining Atoms Unit Test  (50 questions 200 points) V3
PLEASE use your yellow sheet and your periodic table. Take your time and work carefully. Use scrap paper to complete crossing problems when determining chemical formulas. NOTE: QUIA has difficulty displaying numbers in the subscript position  therefore on this test be careful to interpret chemical formulas based on the POSITION of numbers on chemical formulas  water would be represented as H2O  the 2 should be in the subscript position but will not appear that way. Do not mistake them for Coefficients such as the following 3H2O  this tells you that there are 3 molecules of water each composed of 2 atoms of hydrogen (H2) and one atom of oxygen(O). BE CAREFUL.
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