Bill Nye: Phases of matter video sheet. Very easy for my 6th grade EC classes, it's multiple choice answers, the last 2 are short response.
This way they get a chance to watch the video and not spend all of the time on reading and answering the follow along question. Also includes absolute zero, and shows how individual molecules act when you add or remove energy.
Hard time finding the video to stream try looking on dailymotion
Includes an answer key