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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
Name: a Non-metal Which is a Good Conductor of Electricity.
Define Elements.
Give two examples of the following.
Non-metals which are lustrous
Name: Two substances used to make electric wires
Answer the following question:
Why are copper and aluminium used to make electric wires?
Tick (√) the correct alternative from the choice given for the following statement
A non-metal which is a good conductor of electricity.
Give the name of the radical - OH
Give the name of the radical - CO3
State why brass is considered as a homogenous mixture while a mixture of iron & sulphur – heterogenous.
Higher Order Thinking Skills.
In the diagram given below, the circle, square and triangle represent the atoms of different elements.
Identify all combinations that represent
- molecule of a compound
- molecule of an element consisting of two atoms
- molecule of an element consisting of three atoms
