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प्रश्न
Name the following.
The product obtained during a physical change when water converts from a liquid into a solid.
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उत्तर
Ice.
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संबंधित प्रश्न
Fill in the blank.
When a candle burns, wax melts. Melting of wax is a ________ change.
Write true or false
Cutting of paper into pieces is a chemical change.
Tick (√) the correct alternative from the choice given for the following statement
A pop sound is heard when a lighted match stick is brought near the mouth of a jar. This indicates the release of gas.
Classify the following as a physical or a chemical change.
Burning of coal
Explain the term – ‘sublimation’. Is sublimation of naphthalene – a physical or a chemical change. Give reasons.
Fill in the blanks with the appropriate words of the statement given below:
Heating a piece of iron is considered a __________ change while heating a piece of coal [carbon] is considered a ___________ change.
Select the correct answer from the choice given below to complete the sentence
A change in which a substance retains its identity is a
______ change.
When a woolen yarn is knitted to get a sweater, the change can be classified as ____________.
Which of the following is a physical change?
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think rust is different from iron?
