Originally posted by darkfuryex:
ermm i got the result..lame sia! and its purple in colour..nmothing happened LOL my mother also say i lame HAHAHAHA cos no water in it mah..but some part is hard hard one...cos i think b4 i put in melt then dunno what happen...ermm...
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(o ya it didnt froze!

)
If it's dry, there are no water molecules. It will be a solid with a lot of air spaces in between, so it will just be cold.
However if it "melts" that means it came in contact with water. There will be water molecules in it. Since it was not evaporated due to the transparant plastic bag, the water will turn into ice. so become hard hard.