Question

Give reasons for the following statement.

The composition of a mixture is variable.

Answer 1

• The constituents of a mixture are not present in a definite ratio. The composition of a mixture is variable.
• For instance, the amount of carbon dioxide and water vapor present in the air may vary from place to place.
• There is no chemical reaction taking place amongst the constituents of a mixture.
• The forces of attraction holding the constituents are weak due to which the constituents can be separated using simple methods.
• For example, we can separate a mixture of sand and water by filtration.
• The constituents of a mixture retain their original properties.
• For example, air supports combustion due to the presence of oxygen which is one of its constituents.