water and changes of states

Question 1

does the temperature of ice increase or decrease when salt is added.

Answer 1

decrease

Question 2

which of the following is false?
1) when water evaporates, it becomes a gas called water vapour
2) water evaporates at 100 degrees only
3)the boiling point of water is 100 degrees
4) the freezing point of ice is the same as the melting point of ice

Answer 2

2

Question 3

what are some points that needs to be stated for hot water case

Answer 3

• water gains heat and evaporates into warm water vapour
• comes into contact with a cooler surface
• lose heat
• condense into water droplets
• drip down to to the cup (optional)