Question

why do we fill cool when we touch a piece of ice

Answer 1

We feel cold when we touch an object or matter like ice at a lower temperature than our body temperature. This is because the heat from our body being higher in amount moves to the ice through our skin(by thermal conduction) in order to attain thermal equilibrium between the iceand the body.

Answer 2

When we touch ice we feel cold because of the melting and evaporation of the ice. When we touch the ice the ice quickly absorbs the heat of our hand,melts and evaporates with the heat.So we feel cold when we touch ice