Exam 3 Study Guide: What Concepts/Math Are Most Important? Old Stuff That You Should Never Forget! • Be able to solve dimensional analysis problems (mostly metric conversions and stoichiometry) • Be able to perform density calculations to solve for density, or mass, or volume (d = m/V): memorize equation • Know what ions are, how they are formed, and how to calculate the charge on an ion, or how to calculate how many electrons have been gained or lost. • Be able to recognize common acids. • Be able to name ionic compounds, acids, and simple binary molecular compounds. • Be able to write the formula for ionic compounds, acids, and simple binary molecular compounds. • Be able to balance equations and write net ionic equations (and convert word equations to formula equations). Ch 9: Gases • Know the Kinetic/Molecular Theory of Gases. • Given conversion factors, be able to convert between pressure units. (Remember 1 atm =765 torr = 101.3 kPa) • Be able to interpret a monometer like the one on p. 344: which side has the higher pressure?
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