CAS CH 101 Lecture Notes - Lecture 1: Significant Figures, Decimal Mark, Celsius
4 Dec 2017
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An inch of water is equivalent to 10 inches of snow. Based on metric system and units derived from metric system. Accuracy refers to the agreement of a particular value with the true value. Precision refers to the degree of agreement among several elements of the same quantity. If the number has a decimal point, read left to right and begin counting at the first non-zero integer. If the number has no decimal point, read right to left and begin counting at the first non-zero integer. Exact numbers have an infinite number of significant figures and thus are not counted in calculations. Multiplication and division: # sig figs in the result equals the number in the least precise measurement used in the calculation. Addition and subtraction: # sig figs in the result equals the number of decimal places in the least precise measurement. Density is the mass of substance per unit volume of the substance:
