4. how does collision theory explain the rate of reactions
a. when molecules collide they decrease the rate of the reaction
b. when molecules collide they are more likely to react
c. when molecules collide they are more likely to bounce off and not react
d. when molecules collide with enough energy and with the right orientation they will react

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car