[CHEM 110] - Midterm Exam Guide - Everything you need to know! (17 pages long)

• School: NIU
• Department: Chemistry and Biochemistry
• Course: CHEM 110
• Professor: Megan Leifker

Document Summary

The basic quantity of mass, volume, or whatever quantity is being measured. A measurement is useless without its units. Difficult to convert from one unit to another. 1ft = 12 inches = 0. 33 yards = 1/5280 miles. Composed of a set of units that are related to each other decimally, systematic. Mass - the quantity of matter in an object. The pound (lb) is the common english unit. Must be measured on a balance (not a scale) Mass: the quantity of matter in an object. Weight: the force of gravity on an object. The yard is the common english unit. The quart is the common english unit. Basic units are the units of a quantity without any metric prefix. Information-bearing digits or figures in a number are significant figures. The measuring device used determines the number of significant figures in a measurement.