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प्रश्न
Give the symbols of: Carbon, calcium, copper, chlorine, cobalt, argon.
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उत्तर
Carbon is C, Chlorine is Cl, Calcium is Ca, Cobalt is Co Copper is Cu, Argon is Ar.
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संबंधित प्रश्न
Name a soft metal.
Name: the Hardest Naturally Occurring Substance
Define a pure substance. How many types of pure substances do you know?
Give two examples of Noble gases.
Define: Molecule
Select the correct answer to the statement given below:
A metalloid
Classify the following as metals, non-metals and metalloids.
Sodium, Bismuth, Silver, Nitrogen, Silicon, Carbon, Chlorine, Iron, Copper
Differentiate metals and non-metals.
Match the following:
| 1. | Co2 | a. | Robert Boyle |
| 2. | Sulfur | b. | Making mobile phones |
| 3. | Element | c. | triatomic molecule |
| 4. | Gallium | d. | Polyatomic molecule |
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal other than carbon that shows allotropy.
