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प्रश्न
Select the chemical changes from the following list of changes
The occurrence of lightning.
उत्तर
Occurance of lightening is a CHEMICAL change, energy is produced, a new substance with new properties is produced.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Rusting of almirah
Melting of solid (wax) is a physical change.
What is a chemical change ? Give two examples of chemical changes.
Give three reasons why melting of wax, is considered a physical change while burning of a candle, a chemical change.
State what is meant by the term – interconversion of matter. Is interconversion of matter a physical change or a chemical change.
Give reasons why – separation of mixtures e.g. iron from a mixture of iron and sulphur is a physical change, but heating a mixture of iron and sulphur is considered a chemical change.
Fill in the blank with the appropriate word of the statement given below:
If a change is permanent and irreversible it is considered a _________ change.
Select the chemical changes from the following list of changes
Breaking of glass
Select the chemical changes from the following list of changes
Glowing of an electric bulb.
A change in which matter undergoes a change but the total mass of the substance is unaltered is a ______ change.
