- Comparisons of the States of Matter:
https://www.google.com.vn/url?sa=t&rct=j&q=&esrc=s&source=web&cd=9&cad=rja&uact=8&ved=0ahUKEwjwu8DAp5nTAhXGpZQKHQFAAsAQFghTMAg&url=http%3A%2F%2Ftamhan.com%2Ffiles%2FChapter%252011-part1-student.ppt&usg=AFQjCNFAnerYDAJPMeXxhnU1aTvKRbFFQQ
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