What is the common name of solid carbon dioxide?

State one condition necessary to liquefy gases (other than applying high pressure).

Give one use of dry ice.

What are the conditions required for the conversion of one state of matter to the other state?

What are the two ways in which the physical state of matter can be changed?

Define latent heat of fusion. How much is the latent heat of fusion of ice?

For any substance, why does the temperature remain constant during the change of state?

Under what conditions heat can be given to a substance without raising its temperature?

Why does the temperature remain constant during the melting of ice even though heat is supplied continuously?