When suffering from a fever,which will lower your body temperature more effectively: ice or ice-cold water? Why?

Carbon dioxide was taken in an enclosed cylinder and compressed by applying pressure.
$(a)$ Which state of matter will we obtain after completion of the process?
$(b)$ Name and define this process.
$(c)$ What is the common name of the product obtained in the above process?

Why does water as steam cause severe burns,whereas water as ice has a cooling effect? Explain.

Explain how the three states of matter arise due to variations in the characteristics of the particles.

$(a)$ Define boiling point.
$(b)$ Express the boiling point of water in Celsius as well as Kelvin scale.
$(c)$ $A$ diver is able to cut through water in a swimming pool. Which property of matter does this observation show?

$(a)$ Explain the effect of temperature on the movement of particles of matter.
$(b)$ Give a reason why we get the smell of hot sizzling food even when we are metres away from it?