1. An educated guess which explains observations is called:
   a hypothesis
2. When titration is complete, what two things are equal?
   the moles of hydrogen ions and the moles of hydroxide ions
3. Reaction rate measures the speed at which reactants:
   disappear
4. In order for a collision to be considered effective, the reactant particles must have the correct orientation and the proper amount of:
   energy
5. Which of the following will NOT speed up a chemical reaction?
   decreasing the temperature
6. The way to increase the rate of a reaction is to increase the number of effective collisions.
   True
7. A catalyst is considered a reactant in a chemical reaction.
   False

 

(source)