Chem 105 Chpt 4 Lsn 8 1 CHAPTER 4 Chemical Equations and Stoichiometry Test 1 return Know elements 1-86 (symbol and spelling) Formulas must be balanced.
Global Epidemic Black Death – Bubonic Plague Disease spread by fleas on rats Spread from Asia to Europe (trade routes) Fleas jumped from rats to infest.
