What is the physical state of water at :

[question] Question What is the physical state of water at : (a) 250°C (b) 100°C [/question] [solution] Solution (a) 250°C = gas (b) 100°C liquid as well as gas [/solution]...

Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why.

[question] Question Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why. [/question] [solution] Solution Ice is a solid but its density is lower than water due to its structure. The molecules in ice make a cage like structure with lot of vacant spaces, this makes ice float on water. [/solution]...