| Attributes | Sol | Solution | Suspension |
| Type of Mixture | Heterogeneous | Homogeneous | Heterogeneous |
| Size of particles | \( 10^{-7}\) – \( 10^{-5}\)cm | Less than 1nm | More than 100nm |
| Tyndall effect | Exhibited | Not exhibited | May or may not be exhibited |
| Appearance | Usually glassy and clear | Unclouded and clear | Cloudy and opaque |
| Visibility | Visible with an ultra microscope | Not visible | Visible with naked eye |
| Diffusion | Diffuses very slowly | Diffuses rapidly | Do not diffuse |
| Stability | Pretty stable | Highly stable | unstable |
| Settling | Get settled in centrifugation | Do not settle | Settle on their own |
| Example | Milk, blood, smoke | Salt solution, Sugar solution | Sand in water, dusty air |
Which of the following are chemical changes?
(a) Growth of a plant
(b) Rusting of iron
(c) Mixing of iron filings and sand
(d) Cooking of food
(e) Digestion of food
(f) Freezing of water
(g) Burning of candle
Classify the following into elements, compounds and mixtures.
(a) Sodium
(b) Soil
(c) Sugar solution
(d) Silver
(e) Calcium carbonate
(f) Tin
(g) Silicon
(h) Coal
(i) Air
(j) Soap
(k) Methane
(l) Carbon dioxide
(m) Blood.
Which of the following will show the “Tyndall effect”?
(a) Salt solution
(b) Milk
(c) Copper sulphate solution
(d) Starch solution.
Identify the solutions among the following mixtures.
(a) Soil
(b) Sea water
(c) Air
(d) Coal
(e) Soda water
Which of the following materials fall into the category of "pure substance"?
(a) Ice
(b) Milk
(c) Iron
(d) Hydrochloric acid
(e) Calcium oxide
(f) Mercury
(g) Brick
(e) Wood
(f) Air.