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प्रश्न
Name the following:
The type of change physical or chemical involved – ‘when a substance undergoes a change in state, colour or size’.
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उत्तर
Physical Change.
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संबंधित प्रश्न
Fill in the blank
Chemical change occurs as a result of __________ between two substances.
Write true or false
Rusting of iron is a chemical change.
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
What will you take into account while identifying the following?
A chemical change in a substance.
Give the reason why the following is considered as chemical changes.
An iron nail kept open in the atmosphere rusts.
Digestion of food is a physical change.
______ is the Universal Solvent.
Classify the following as physical or chemical properties
The composition of a sample of steel is 98% iron, 1.5% carbon and 0.5% other elements.
Two drops of dilute sulphuric acid were added to 1 g of copper sulphate powder and then small amount of hot water was added to dissolve it (step I). On cooling, beautiful blue coloured crystals got separated (step II). Step I and Step II are:
Adding sugar to milk is a physical change.
