[CHEM 132] - Midterm Exam Guide - Ultimate 18 pages long Study Guide!
6 Feb 2017
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Formulas: range = xmax - xmin, sd = ( (xi - ))/(n - 1, absolute error = experimental value - theoretical value , percent error = ( absolute error / theoretical value) * 100% Experiment 2: identifying an unknown solid by density. Vocabulary: intensive property: depends only on the composition of the substance, does not differ with the size or amount of substance being used. Formulas: d = m/v or v*d = m, y = ax + b, slope = y/ x = (v2 - v1)/(m2 - m1) Procedure: 2 unknown metal solids (5 samples each, mass 1st metal *3, h2o graduated cylinder, record volume (v) 8. sample graduated cylinder record v, remove and dry sample repeat 3-5 for 1st sample repeat 2-6 for 2nd sample return samples. Graphs: mean volume (ml) mean mass (g) Experiment 3: chemical and physical properties: separation of a mixture.
