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प्रश्न
Select the chemical changes from the following list of changes
The occurrence of lightning.
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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 changes involved in the following process as physical or chemical changes:
Photosynthesis
Write true or false for the statement.
Dissolving of solute in a solvent and rusting of iron are both physical changes.
Write true or false
Rusting of iron is a chemical change.
True or false
In a physical change no net energy change is involved.
Ice kept in a beaker, slowly melts and turns into water. The water in the beaker on solidification is freezing turns back to ice. Give four reasons why the change from ice to water and water back to ice is considered a physical change.
Fill in the blank with the correct word of the statement given below:
Sublimation involves a __________ change.
Change is the law of nature which occurs in everyday life.
State when a substance [i.e. matter] undergoes a kind of change.
Select the chemical changes from the following list of changes
Rotting of eggs.
Select the chemical changes from the following list of changes
Drying of a fruit
Give the reason why the following is considered as chemical changes.
Sulphur when burnt in air evolves a gaseous acidic product.
