Even though ice is a solid why does it have low density than water?
Ice is a solid state of water.
Normally when something is heated it expand, but in case of water it is bit different
When ice is heated and when it reaches 4℃ it contract instead of expanding (and after 4℃ it expands.) So water at 4℃ has the most density.
When it contract its volume decreases and becomes more dense.
Eg.: a) v = 1, m = 1 ; b) v = 0.5, m = 1
a) ρ = 1 ; b) ρ = 2
Therefore we understood that as volume decreases, density increases.
But ice is at 0℃. As water reaches 0℃ it expands instead of contraction.
When it expands it's volume increases and becomes less dense.
Eg.: a) v = 1, m = 1 ; b) v = 0.5, m = 1
a) ρ = 1 ; b) ρ = 2
Ice is solid water at 0°C. So it's density is lesser than the water and floats in water.
Ice is solid water at 0°C. So it's density is lesser than the water and floats in water.
This is called Anomalous expansion of water.
