Advertisements
Advertisements
प्रश्न
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to existence
Advertisements
उत्तर
Existence
Elements –Elements i.e. atoms are present on their own. e.g. Iron and sulphur exist on their own as elements iron and sulphur.
Compounds – Components in a compound present in a definite proportion. e.g. Iron and sulphur are chemically combined in a fixed ratio in iron sulphide
Mixtures –Components in a mixture present in any proportion. e.g. Iron and sulphur are mixed in any ratio in the mixture of iron and sulphur.
संबंधित प्रश्न
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.
What is the difference between a pure substance and a mixture ?
State four important characteristics of compounds
Name the elements present in Ammonia
Name the elements present in Washing soda
What is the proportion of element present in the following compound?
NO2
Write the molecular formulae of compound carbon monoxide
Give the example of a compound containing hydrogen and oxygen.
Give the example of a compound containing carbon and oxygen.
State two characteristics of water which prove that it is a – compound.
Select the correct answer from the choice given below.
A compound
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to properties
Mention any four compounds and their uses.
Mention the uses of the following compounds.
- Baking soda
- Bleaching powder
- Quick lime
What is meant by compound?
Sodium chloride is used as table salt and for flavoring and preserving food.
Classify the following as element and compound,
- Silver
- Ammonia
- Water
- Mercury.
Higher-Order Thinking questions:
Why is water considered a compound?
The other name for potassium hydroxide is caustic potash.
