Question

1. Select homogeneous and heterogeneous
mixtures from the following:
Salt solution, petrol and water, sand and
charcoal, alcohol and water, air dissolved in
water, air, sea water, fruit juices, mist, brass,
Define the following with an example for each :
(a)
Pure substance
(b) Impure substance
(c) Alloy
(d) Solution
(e) Heterogeneous mixture
of Homogeneous mixture
List four characteristics of a mixture.
Give reasons :
(a) Why do sugar and water retain their
individual properties in a sugar solution ?
b) Why do petrol and water form a
heterogeneous mixture ?
(c) Why does sulphur dissolve when carbon
disulphide is added to a mixture of iron and
sulphur but not when it is added to iron
sulphide ?
5. Give two examples for each of the following
types of mixtures.
(a) solid-solid (b) solid-liquid
(c) liquid-gas (d) gas-gas
6. Name the components present in the following
mixtures :
(a) Brass
(b) Duralumin
(c) Tap water (d) Bronze
7. State :
(a) Three ​

Answer 1

Answer:

1) homogeneous mixture- salt solution, alcohol and water,air in water, air, sea water , fruit juice , mist, brass others are heterogeneous...

(definition u can get so I'm not writing)

give reasons

a. because sugar solution is a homogeneous mixture and mixture contains it's property

b.because Petrol and water are immiscible liquids and also water is heavier and petrol is lighter.

c.( I don't know this dear sorry)

5. a. sand and salt

b. salt and water

c.air and water.

d. air

Answer 2

Answer:

Yes her answer is correct