Answer:well... i don't really know how i remember, but here is a list:
1st is Mercury, the smallest planet.
2nd is Venus, which is not exactly earth's twin, even though many people say so.
3rd is earth, which is where we live on!
4th is mars, which is about 1/3 the size of earth.
Then, we go to the gas giants, which are all gas.(the others were rocky, like earth.
5th, which is Jupiter, is the biggest of the planets.
6th is Saturn, which has cool rings.
7th is Uranus, which is on it's side which means it looks like it's rolling around.
8th is Neptune, which has a TON of wind.
Explanation: try to remember by listening to the planet songs.(i know it sounds weird, but that's how i learned).