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प्रश्न
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to Separation of compound
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उत्तर
Separation of compound
Elements –Elements occur on their own or as compounds and can be separated by chemical and physical methods. Example: Iron, copper.
Compounds – Elements in a compound are chemically combined and can be separated by chemical methods only. Example: Iron Sulphide, copper oxide.
Mixtures – Components in a mixture can be separated by physical methods only.
Example: Iron + sulphur
संबंधित प्रश्न
Fill in the blank
In a _______ the substances are not combined chemically.
Write true or false
Handpicking can be used as a separation technique if the particle size of the constituents of the mixture is the same.
Name the elements present in Ammonia
What is the proportion of element present in the following compound?
H2O
State four differences between compounds and mixtures.
Write the molecular formulae of compound hydrogen sulphide.
Give the example of a compound containing carbon and oxygen.
What is the molecular formula of the following compound?
Hydrochloric acid
What is the molecular formula of the following compound?
Sulphuric acid
What is the molecular formula of the following compound?
Methane
Explain the difference between Mixture and compounds.
Explain the term mixture.
What are compounds? Give two examples.
State whether true or false. If false, correct the statement.
A compound cannot be broken into simpler substances chemically.
Sodium chloride is used as table salt and for flavoring and preserving food.
Complete the table
| Compound | Constituent elements |
| Sodium carbonate | Sodium, Carbon. Oxygen |
| Water | |
| Calcium oxide | |
| Sugar | Carbon, Hydrogen, Oxygen |
Higher-Order Thinking questions:
Why is water considered a compound?
A compound has a fixed ______.
Name the compounds used in fertilizers.
