rate of reaction

Question 1

to form a new product, particles must:

Answer 1

go beyond the activation energy
collide with enough kinetic energy
collide at the correct orientation

Question 2

factors that speed up the rate of reaction:

Answer 2

higher temperature (lowers activation energy)
higher concentration ( particles closer together = quicker reaction).
adding a catalyst (that speeds up the rate of reaction, and can never be used up).
having a larger surface area ( the smaller a product is broken down, the larger the surface area the particles have to collide with).

Question 3

what does concentration mean?

Answer 3

it means the abundance of a substance in a solution.