Reactive resins have a substance, resin, added into the cover material to grab the lanes when it encounters dry.  So, it will skid in oil, saving its energy to expend once it hits the dry.  Typical hook shape is like a hockey stick.

Particle balls have tiny particles added into the shell or cover material to grab through the oil, like studs on a snow tire.  Hence, it tends to grab earlier than a normal reactive (resin) ball, expending its energy sooner, so its resultant hook shape is more of a curve, like a banana shape.  The determination of when it starts to grab the lanes depends on the particle load (number of particles) and type and size.  There are also newer pearl particles that get more length down the lane before they start to hook, so their hook shape will appear to be close to the reactive.

Some people will have a love or hate relationship with each type of ball.
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I just want 2C was'zzub.
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I am the SGT Schultz of bowling.
"I know nothing!"