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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
Give two examples of Metals.
Give two examples of the following.
Non-metals which are solids
Indicate whether the following statement is true or false:
Elements are made up of compounds
Tick (√) the correct alternative from the choice given for the following statement.
Atoms of different kinds combine to form molecules of
Tick (√) the correct alternative from the choice given for the following statement.
The compound used as common salt is
Elements are classified into – Metals – Non-metals – Metalloids – Noble gases. State which of A, B, C, D is a –
1. Metallic element
2. Non-metallic element
3. Metalloid
4. Noble gas.
A: Is non-malleable, non-ductile & a poor conductor of electricity ___________
B: Has lustre, is malleable and ductile & a good conductor of heat ___________
C: Is unreactive and inert and present in traces in the air _________
D: Shows properties of both metals and non-metals ___________
State four differences between – elements, compounds and mixtures with suitable examples.
Define the terms elements, compounds & mixtures with a view to show their basic difference.
Select the correct answer from the choice given below to complete the sentence :
Dust in air is an example of _________ mixture.
Classify the following as elements and compounds.
Water, Common salt, Sugar, Carbon dioxide, Iodine and Lithium
