Scientists believe that chemical reactions can only happen when the particles of the reagents bump, or collide, into each other. This is called the ______ Theory and can help explain the rate of a reaction.
However, not all collisions between _____ particles will result in the products of that reaction being formed. It is only a few of the more ______ collisions that result in the formation of the products.
The collisions that do result in the formation of new products from a reaction are called _____ collisions. This means that reagent particles need a minimum amount of energy to make successful collisions occur. '

Word bank:
forceful
reagent
Collision'
"super"
"successful"
Reaction
direct