Advertisements
Advertisements
Question
State three differences between evaporation and boiling
Advertisements
Solution
| BOILING | EVAPORATION | |
|---|---|---|
| Definition of these two terms | Boiling is vaporisation of liquid into gas due to continuous heating. Most of the time it is not a natural process. | Evaporation on the other hand is a natural process and it is similar to boiling , but the liquid form changes into gaseous form when there is a increase in either temperature or pressure or both. |
| Occurrance | Large mass | only on surface |
| Amount temperature involved | Boiling happens when the temperature reaches to the boiling point. | In Evaporation the temperature does not need to reach to boiling point |
| Bubble Formation | Bubble formation is visible | Bubbles do not form in evaporation |
| Energy | Usually external source of energy is needed for boiling to happen. | Most of the time energy for evaporation is supplied by the atmosphere or surrounding. |
| Length of the process | Rapid Process | Slow process compared to boiling |
APPEARS IN
RELATED QUESTIONS
Melting of solid (wax) is a physical change.
State whether the following is physical or chemical changes.
cutting wood into small pieces —
State whether the following is physical or chemical change.
Digestion of food —
Classify the following changes as physical or chemical.
Which of the following are physical changes and which are chemical changes ?
Freezing of water
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
Give three reasons why melting of wax, is considered a physical change while burning of a candle, a chemical change.
Give a reason why rusting of iron is a chemical change but, the magnetization of iron is a physical change.
Select the correct answer from the choice given below to complete the sentence
The energy required for completion of a physical change is ______________ when the change is reversed.
______ is the substance that is dissolved in a solvent.
