CHM135H1 Study Guide - Midterm Guide: Unified Atomic Mass Unit, Benzocaine, Calcium Carbide

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18 Feb 2016
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CHM135H1 Full Course Notes
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CHM135H1 Full Course Notes
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Topics included: review of fundamental concepts, quantum mechanics, states of matter: solids, states of matter: liquids, states of matter: gases, solutions. Units are very important when plugging values into equations and formulas as you need to make sure that you are using standard units. Measurement unit a (x unit b y unit a) conversion factor. Ex: at 20 c, the density of water is 0. 9978g/ml. Solution: 1. 75kg (1000g 1kg) (1ml 0. 9978g/ml) = 1. 75 103ml. Accuracy and precision are two different concepts that you should not confuse with one another. Accuracy how close the measurement is to the true value. Precision how close repeated measurements are to each other. Keep in mind that all measurements are subject to error so use significant figures (sig figs) because they reflect the precision of the measurement. Significant figures are the total number of digits in the measurement. Matter is anything that has both mass and volume.

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