What is this process called?

It is called Vaporization.

What is meant by vaporization?

Vaporization is the changing of a liquid into a vapor, by boiling.

What is necessary to change a liquid into a vapor?

Heat is necessary to change a liquid into a vapor.

At what temperature is water changed into steam?

At the temperature of two hundred and twelve degrees.

Are all liquids changed to vapor at the same temperature?

No; they vary very much in the amount of heat required.