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प्रश्न
Match the following.
| 1. | Element | Made up of molecules |
| 2. | Compound | Impure substance |
| 3. | Colloid | Settles down on standing |
| 4. | Suspension | Pure substance |
| 5. | Mixture | Made up of atoms |
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उत्तर
| 1. | Element | Pure substance |
| 2. | Compound | Made up of atoms |
| 3. | Colloid | Made up of molecules |
| 4. | Suspension | Settles down on standing |
| 5. | Mixture | Impure substance |
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संबंधित प्रश्न
State four differences between compounds and mixtures.
Name: a Liquid Metal
How is sodium chloride different from its constituent elements, sodium and chlorine in its properties? Justify.
Give two examples of the following.
Non-metals which are lustrous
Define:
Atomicity
Complete the statement with the correct words.
__________ are chemicals formed on reaction of a base with an _____ giving salt and water.
Complete the statement given below by filling in the blank with the correct word.
The basic unit of an element is an __________.
Match the separation of components in List I with the most appropriate process in List II.
| List I | List II |
| 1. Naphthalene from naphthalene & sodium chloride. | A: Separating funnel |
| 2. Cream from milk. | B: Sublimation |
| 3. Kerosene oil from kerosene oil & water. | C: Boiling |
| 4. Lead nitrate from an aqueous solution of lead nitrate. | D: Centrifugation |
| 5. Ammonia from an aqueous solution of ammonia. | E: Distillation |
Classify the following as elements and compounds.
Water, Common salt, Sugar, Carbon dioxide, Iodine and Lithium
Why are utensils made up of aluminium and brass?
