Question

1. give 4 examples of hetrogenous ,homogeneous and colloidal solution ...
2 . difference between mixture n compound .
plz give the answers as fst s possible.

Answer 1

Compounds

1. Compounds are pure substances.

2. They are made up of two or more elements combined chemically.

3. The constituents of a compound are present in a fixed ratio.

4. Compounds have fixed properties. For example, a particular compound will have fixed temperatures at which it melts and boils.

5. A compound can have properties different from its constituents, as a new substance is formed when the constituents are chemically combined.

6. The constituents of a compound can be separated only by chemical methods.

Mixtures

1. Mixtures are impure substances.

2. They are made up of two or more substances mixed physically.

3. The constituents of a mixture are present in varying ratios.

4. Mixtures do not have fixed properties. Their properties depend on the nature of their compo­nents and the ratios in which they are combined.

5. In mixtures, no new substance is formed. The properties of a mixture are the same as the properties of its constituents.

6. The constituents of a mixture can be separated easily by physical methods.

Answer 2

Mixture:- Elements or compound just mix together to form a mixture and no new compound is formed.
A mixture has a variable composition.
A mixture shows the properties of the constituent substance.

Compound:- Elements react to form new compounds.
The composition of each new substance is always fixed.
The new substance has totally different properties.


Examples of Heterogenous
Sand and salt , sugar and salt,, Salt and water,, water in oil etc.
Homogeneous :-
Salt solution,,
sugar solution
copper sulphate solution
sea water
alcohol and water mixture etc.

Colloidal solution:-
Soap solution
starch solution
milk
ink
blood
jelly etc..