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प्रश्न
State the number of atoms of CaCO3
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उत्तर
CaCO3 has atoms of
Calcium 1 atom in number
Carbon 1 atom in number
Oxygen 3 atoms in number
The name of the compound is Calcium Carbonate.
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संबंधित प्रश्न
Classify the following substances into elements and compounds
Mercury, sulphur, sugar, water, sand, gold, carbon, oxygen, alcohol, iron, marble, baking soda.
Give three differences between metals and non-metals.
Define: Molecule
Tick (√) the correct alternative from the choice given for the following statement
A metal which is brittle
Explain the difference between Metals and non-metals.
Write an answer to the following question in your own words.
Which elements (metals and non-metals), compounds and mixtures do we use in our day-to-day life?
Select the correct answer to the statement given below:
A metalloid
Differentiate metals and non-metals.
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 |
Match the following:
| 1. | Co2 | a. | Robert Boyle |
| 2. | Sulfur | b. | Making mobile phones |
| 3. | Element | c. | triatomic molecule |
| 4. | Gallium | d. | Polyatomic molecule |
