CHEM 1151 Lecture Notes - Lecture 3: Unified Atomic Mass Unit, Weighted Arithmetic Mean
Document Summary
12 inch = 1 ft 3 feet = 1 yard. 2 cups = 1 pint 2 pints = 1 quart. A method of converting from one set of units to another set of units by using a series of conversion factors. A conversion factor is a fraction made from an equivalency. 1 foot = 12 in = two fractions from it (1 ft/12 in or 12 in/1 ft) Conversion factors are set up so that the same units are on the diagonal. 1 week = 7 day, 1 day = 24 hours, 1 hour = 60 min. A ratio (fraction) of mass to volume of an object. The units are usually g/ml, but they can be any mass/any volume. Any pure substance can be identified by its density. The density of pure water is 1. 000 g/ml (grams per milliliter) at 4 degrees celsius. The larger density sinks, the smaller density floats. Any pure substance will have its own unique density.
