Advertisements
Advertisements
Question
Define the following term Freezing.
Advertisements
Solution
Freezing : It is a process in which a liquid changes into a solid on cooling.
APPEARS IN
RELATED QUESTIONS
Why are we able to sip hot tea or milk faster from a saucer than a cup?
What produces more severe burns, boiling water or steam?
What is evaporation?
Wet clothes dry more quickly on a warm dry day than on a cold humid day. Explain.
Explain with an example to demonstrates that when a liquid evaporates, it takes heat from its surroundings.
Would you cool a bucket of water more quickly by placing it on ice or by placing ice in it? Give reasons for your answer.
Why does all the water of the earth not get evaporated during hot summer days ?
The scientists now say that there are actually five states of matter A, B, C, D and E. The state A has a fixed volume but no fixed shape. The state B can be compressed very easily by applying pressure and state C has a fixed shape as well as a fixed volume. The state D is a mixture of free electrons and ions whereas state E is named after an Indian scientist and a famous physicist.
- Name the physical states (i) A (ii) B (iii) C (iv) D, and (v) E
- Name one substance belonging to state C which can directly change into vapours on heating. What is this process known as ?
- Name one substance which normally belongs to state B but whose solid form changes directly into gaseous state.
- Name the most common substance belonging to state A.
- Which state of matter makes the sun and other stars to glow ?
Can you suggest a method to collect water from sea water?
Evaporation is a fast process and occurs only at the surface of the liquid.
