yh das wat i was thinkin..but its prob wat we hav to do...i don't get y has nitrogen got 3 bonds in equation 1 ???? sorry if this is stupid!!??? :s eerrrmm...if its worth 4 marks then im spedin 154 words approx on it...but das excludin diagrams.. this is ma first time doing this paper and ive only got 3 days includin 2day to finish it ..ive only started yesterday..i havn't done much... :S oopppssss ..!!! concentrate on the first and 3rd questions..u know on the first one it says "explain diff types of engines.....write more abt that than the first sentence and for the third one explain the fisrt bullet point prop and the second one would be in detail too but not as much as the first and for the third one u would hav less than both...i have divided ma 1000 words..ive got 346 words for the 1st question, 154 for the second, 385 for the 3rd and 115 for the 4th....lol..i hope that helps??!!