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प्रश्न
Classify the following as a physical or a chemical change.
Melting of wax
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उत्तर
Physical change
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Fill in the blank.
An earthquake is a .................. change.
State the differences between a physical change and a chemical change.
Which of the following are physical changes and which are chemical changes ?
Rusting of iron
Give four difference between physical and chemical changes.
Give a reason why – Heating a platinum wire is a reversible change but, heating a magnesium wire is an irreversible change.
Select the chemical changes from the following list of changes
Glowing of an electric bulb.
State whether the following statement is true or false:
Anaerobic bacteria digest animal waste and produce biogas.
Give two examples for the following case:
Physical changes which are not reversible
Give an example of a physical change in which the color of the substance changes.
