Indicate whether the following statements are true (T) or false (F):
___ The higher the activation energy, the slower a reaction at a given temperature.
___ A homogenous catalyst is present in the same phase as the reacting molecules.
___ Most reactions occur by a one-step mechanism.
___ A unimolecular elementary step involves only a single reactant that breaks apart.
___ Termolecular reactions require that three molecules collide simultaneously.
___ The half-life of a first-order reaction is constant.
___ As the temperature is increased, the number of species reaching the transition state of the rate-determining step increases.