What is the term for the different phases water can take?

Water in solid form is called as Ice. In liquid form it is called as Water and in gaseous phase it is called as Steam or water Vapour.

Explanation:

Triple point of the substance is the temperature and pressure  at which all the 3 phases solid, liquid and gas coexist in equilibrium.

The Triple point of water is 273.16 K  or 0.01℃

Under ordinary conditions, water exists in one of three stages, the strong stage (ice), the fluid stage (water), and the vaporous stage (steam).

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c. 4.54 x 10–12 j happens to be correct