Which equation represents the reaction of acetic (ethanoic) acid with water? ch3coo- + h2o ch3cooh + oh- ch3cooh + h2o ch3coo- + h3o+ ch3coo- + h2o ch3coo2- + h3o+ ch3cooh + h2o ch3cooh2+ + oh-

List four observations that indicate that a chemical reaction may be taking place

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy

Energy defines the different "states" of matter. in no more than 3 sentences, describe the amount of kinetic energy that each of the 3 states of matter possesses and relate that to the atom/molecular motion of each "state".