Naked Science Forum

Non Life Sciences => Chemistry => Topic started by: Adam Spurgeon on 14/12/2010 13:30:03

Title: Is ice heavier then water?
Post by: Adam Spurgeon on 14/12/2010 13:30:03

Adam Spurgeon  asked the Naked Scientists:
   
When ice freezes why doesn't it get heavier? It expands so shouldn't it displace the gas which then creates more mass making it get heavier?

What do you think?

Title: Is ice heavier then water?
Post by: Bored chemist on 14/12/2010 19:33:19

What gas?

Title: Is ice heavier then water?
Post by: CliffordK on 14/12/2010 22:26:35

With the conservation of matter, a state change will not change the mass.

You may displace air... It is providing pressure but it is not providing a mass effect.

If anything...  if you thought of air as a fluid, then them more fluid you displaced, the more buoyant a substance would be, and thus the lower the weight (mass, of course being constant).

Title: Is ice heavier then water?
Post by: Chemistry4me on 14/12/2010 23:21:47

At 0^oC a given volume of ice weighs less than the same volume of water as it is less dense