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प्रश्न
Fill in the blank
Chemical change occurs as a result of __________ between two substances.
उत्तर
Chemical change occurs as a result of rearrangement of atoms between two substances.
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संबंधित प्रश्न
Fill in the blank
Changes that occur in nature are called ______
Sublimation is classified as a physical change. Why ?
Classify the following as physical or chemical changes :
- Cooking of food
- Boiling of water
- Cutting of trees
- D0issolving salt in water
- Digestion of food
- Melting of ice
Classify the following as physical or chemical changes :
Breaking of a glass tumbler
Select the chemical changes from the following list of changes
Vaporisation of water into water vapour.
Select the chemical changes from the following list of changes
Butter turning rancid
Give the reason why the following is considered as chemical changes.
Sulphur when burnt in air evolves a gaseous acidic product.
What type of change is colouring of a paper?
State whether the following statements are true or false:
Stretching of rubber bands is not a physical change.
Explain the characteristics of physical change with examples.
