Surface chemistry - Review

Which of the following interface cannot be obtained?

• liquid-liquid

• solid-liquid

• liquid-gas

• gas-gas

Which one is a homogeneous mixture?

• Milk dissolved in water

• Whipped Cream

• Blood dissolved in water

• Sodium Hypochlorite dissolved in water

The tyndall effect can be seen in...

• Suspension

• Solution

• Colloids

• All of the above

Which has the largest particles?

• Solution

• Colloids

• Suspension

• None of the above

Tyndall effect occurs when the colloidal particle ........

• adsorbs the light

• passes the light

• scatters the light

• is able to do brownian motion

Electrolyte excess in a colloidal system can be removed by ......... process

• Electrophoresis

• Ultrafiltration

• Dialysis

• Peptization

Which substance that includes in aerosol system?

• soap foam

• paint

• colored glass

• smoke

Colloid preparation from molecules or ions to form colloidal particles is called .......

• coagulation

• condensation

• Mechanical dispersion

• Peptization

Which one is the example of colloidal system when solid is dispersed in gas?

• fog

• foam

• smoke

• pumice stone

Coconut oil is non polar, while water is polar. They can not be mixed and will not dissolve each other.

Emulsion is produce when oil-water mixture is shaken and is added by....

• hot water

• salt solution

• soap solution

• kerosene