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One kind of matter can be distinguished from another by its physical properties and chemical properties.
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State the information obtained from the formula of a compound.
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Write the molecular formulae of compound calcium oxide.
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Write the molecular formulae of compound hydrogen sulphide.
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Write the molecular formulae of compound carbon monoxide
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Write the molecular formulae of compound lead sulphide.
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State what would you observe if
(a) sugar is added to pebbles take in a plastic beaker
(b) sand is added to glass balls in a beaker. What would you conclude from this imaginative demonstration?
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Complete the statement given below by selecting the correct word.
The conversation of vapour into a liquid is called ____.
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Complete the statement given below by selecting the correct word.
____ is an example of a crystalline substance.
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Fill in the blank with the correct word Given below.
From the three states of matter, _____ expand the least.
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Fill in the blank with the correct word Given below.
Brownian movement is maximum in ____.
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Fill in the blank with the correct word Given below.
Matter can change from one state to another by the change in ____
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State the property of the following substance.
Hydrogen sulphide gas has a strong rotten egg odour.
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State the property of the following substance.
Sulphur is a yellow amorphous powder insoluble in water.
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Match the characteristics of the three states of matter in List I with their correct answer from List II.
| List I | List II |
| 1. Are highly rigid and have a definite shape | A: Solids and gases only |
| 2. Have no definite shape | B: Solids only |
| 3. Have definite volume but no definite shape | C: Liquids and gases only |
| 4. Are highly compressible and least rigid | D: Gases only |
| 5. Have no definite volume | E: Solid, liquids and gases |
| 6. Have no definite shape and volume |
F: liquids only |
| 7. Occupy space | G: Solids and liquids only |
| 8. Are not compressible | |
| 9. Are slightly compressible | |
| 10. Have mass |
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Match the arrangement of atoms in the three states of matter in List I with the correct state in List II.
| List I | List II |
| 1. Arrangement of atoms is far apart | A: Solids |
| 2. Force of attraction between atoms is very strong | B: Liquids |
| 3. Movement of atoms is in any random direction | C: Gases |
| 4. Particles diffuse very easily | |
| 5. Particles show movement about their own position |
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State the correct term from A, B, C, D, E, or F in List II which represents the change of state of matter or its relevant property from List I.
| List I | List II |
| 1. Solid 'X' to a Liquid 'X' | A: Condensation |
| 2. Liquid 'Y' to its vapour 'Z' | B: Vaporization |
| 3. 'Z' to 'Y' | C: Melting |
| 4. 'Y' to 'X' | D: Freezing |
| 5. The temperature at which 'Y' changes to 'Z' | E: Melting point |
| F: Boiling point |
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Give the example of a compound containing hydrogen and oxygen.
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