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प्रश्न
Try segregating the things around you as pure substances or mixtures.
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उत्तर
- Pure substance: Distilled water, diamond; graphite, gold, sulphur.
- Mixture: Curd, ice cream, kerosene oil, cooking oil, steel, vulcanised rubber, solder wire (an alloy of lead and tin).
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संबंधित प्रश्न
Fill in the blank
Revolution of the earth around the sun is a ________ change.
State whether the following is physical or chemical changes.
glowing of a bulb -
State whether the following is physical or chemical changes.
cutting wood into small pieces —
State whether the following is physical or chemical change.
Digestion of food —
Sublimation is classified as a physical change. Why ?
State one instance where water undergoes a physical change and one in which it undergoes a chemical change.
Fill in the blank.
A change, which alters the composition of a substances, is known as a___________ change.
Fill in the blank with the correct word of the statement given below:
Sublimation of iodine is an example of _________ change.
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
Grinding of wheat grain changes its size. It is a ____________ change.
