The state of matter with only one free surface is:
Give reason why liquids have one free upper surface only.
What were characteristics primordial universe as described by the author?
I. Back then there were very few complex matter
II. In that state there was no complex matter in the universe
III. During that state there was possibly only one kind of panicle and one force
IV. The primordial universe was boring
Matter changes from one state to another with change in: