Question

when pressure on a piece of ice is increased its melting point increases, decreases, remains same or first increase and then decrease​

Answer 1

Answer:

When pressure on a piece of ice is increased it's melting point decreases.

Explanation:

For most substances, increasing the pressure when a system is in equilibrium between liquid and solid phases will increase the phase transition temperature. Water is one of a few special substances for which the pressure lowers the temperature of transition. The basic reason is that water actually expands when it goes from the liquid to solid phase.