Advertisements
Advertisements
Question
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to the term
Advertisements
Solution
Term
Elements – Pure substance made up of one kind of atoms only. e.g. Iron [Fe], Sulphur [S]
Compounds – pure substance made up of two or more different elements, e.g. Iron sulphide [FeS]
Mixtures – Impure substance made up of two or more elements or compounds, e.g. Iron and sulphur mixture.
RELATED QUESTIONS
Select the correct alternative from the choices given for the following statement:
A set of mixture is
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 are the different types of mixtures ?
The methods of separating components of a given mixture are based on the
Name the elements which form water.
How will you justify that water is a compound?
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 hydrogen sulphide.
Write the molecular formulae of compound carbon monoxide
Explain the term compounds.
Give the example of a compound containing nitrogen and oxygen.
Give the example of a compound containing calcium and oxygen.
State two characteristics of water which prove that it is a – compound.
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to existence
What is the molecular formula of the following compound?
Hydrochloric acid
What is the molecular formula of the following compound?
Sulphuric acid
What are compounds? Give two examples.
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 which is known to form the largest number of compounds.
Which of the following are not compounds?
- Chlorine gas
- Potassium chloride
- Iron
- Iron sulphide
- Aluminium
- Iodine
- Carbon
- Carbon monoxide
- Sulphur powder
