Put the particles in order of how quickly they diffuse, starting with the particle that diffuses the fastest. Give a reason for your answer.
I smell dinner!
At dinnertime, you and your little brother notice that you can smell your dinner cooking in the kitchen, even though you are upstairs in your bedrooms. Your little brother thinks this is magic, but you know it is actually science.
Use diagrams to explain how you can smell dinner cooking in the kitchen if you are upstairs.