Heating solid basic constellation

(1) When the temperature rises to 0℃, continue heating, but the temperature does not rise. So it can be seen that the substance is crystal, melting point is 0℃, and it is ice.

It was not until 2 minutes later that the temperature began to rise. Ice is a crystal with a melting point of 0 degrees.

(2) Draw points according to the data in the table and connect them with smooth curves, as shown below.

So the answer is: 0; Ice; 2; See the figure below: