3 ms·
You have it backwards. Density is mass/volume so with the same mass when density increases the volume decreses
by pi-e-sigma 3y ago
You have it backwards. Density is mass/volume so with the same mass when density increases the volume decreses
- tonyarkles 3y agoYou're right about how density works, but I don't have it backwards: A given mass of water: - At 20C is less dense/higher volume than water at 4C - As you cool it the density increases and the water shrinks - At 4C the water is now at maximum density and minimum volume - As you continue cooling it from 4C, it starts expanding again - At 3C the water is lower density than it was at 4C and is again expanding - At 0C where the water starts to transition to a solid the volume expands significantly I guess I wasn't clear that the expansion only starts again as you go from 4C -> 0C in the liquid phase.
- pi-e-sigma 3y agoah OK, I get your point :) It doesn't really matter though because water when liquid doesn't cause any problem when expanding or contracting, its level in a vessel will just slightly change. It's only the ice that can fuck up pipes etc