Question
State any five physical properties of a non-metal.
✓
Answer
Physical properties of a non-metal :
- State :Non-metals are generally gases at room temperature.
- Hardness :Non-metals are not hard (being gases). In case of solid non-metals, they are hard but brittle in nature.
- Conductivity :Non-metals are poor conductors of heat and electricity except graphite.
- Malleability :Non-metals are non-malleable, i.e., they cannot be drawn into sheets.
- Ductility:Non-metals are non-ductile, i.e., cannot be drawn into wires.
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Solve this crossword by using the clues that follow-
Across
1. Energy in the form of sunlight is absorbed by the green plants in this process.
4. The reddish-brown substance formed over iron in the presence of oxygen and moisture.
5. This change is permanent and irreversible.
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1 . It is the change that takes place in case of swinging pendulum of a clock. –
2. Occurrence of this is a non-periodic change as well as a natural change.
3. It is a physical change.
Across
1. Energy in the form of sunlight is absorbed by the green plants in this process.
4. The reddish-brown substance formed over iron in the presence of oxygen and moisture.
5. This change is permanent and irreversible.
6. The process in which a solid directly changes into gaseous state.
Down
1 . It is the change that takes place in case of swinging pendulum of a clock. –
2. Occurrence of this is a non-periodic change as well as a natural change.
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