Question

) a) What temperature in kelvin scale is equal to 500C?
Describe an activity to show that rate of evaporation increases with surface area.
State two differences between evaporation and boiling.

Answer 1

Dear student,

1) $0^{0}celcius$ = 273.15K
${500}^0$ celcius = 273.15 + 500
= 773.15 K
Hence, 773.15 K is equals to 500 degree celcius.

3) The differences between evaporation and boiling are:
1. Evaporation occurs on the surface of the liquid whereas boiling occurs at the entire mass of the liquid.
2. Boiling occurs rapidly whereas evaporation is a slow process.
3. Evaporation occurs at any temperature whereas boiling occurs at a specific temperature.
4. The motion of particles is fast in boiling whereas in evaporation few particles move slowly and few at a faster rate.
5. There is the formation of bubbles in boiling, but bubbles are not seen in case of evaporation.

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