Expand the prompts into full senteces
1.temperature fall below 0*C-->weater freeze
2.boli weater-->make steam
4. put salt on ice-->melt
1.If the temperature falls below 0*C , the water freezes
2.If we boils the water,the steam makes.
3.If we heats metal, it expands
4.If we puts salt on ice, the salt melts.