Solutions, Suspensions, Emulsions

Question 1

A stable uniform mixture of two or more substances is a :

Answer 1

Solution

Question 2

The substance that dissolves the solute & makes the solution:

Answer 2

Solvent

Question 3

Substance dissolved in a solution is the:

Answer 3

Solute

Question 4

What is the universal solvent?

Answer 4

Water

Question 5

miscible liquids means:

Answer 5

They can be mixed together to form solutions. (Water & alcohol)

Question 6

Immiscible liquids:

Answer 6

Are not capable of being mixed together to form a solution. (Water & oil)

Question 7

Containing larger & fewer miscible particles , this Unstable physical mixtures of undissolved particles in a liquid is called:

Answer 7

Suspensions

Question 8

Unstable physical mixture of 2 or more immiscible substances plus a special ingredient called an emulsifier is called an:

Answer 8

Emulsion

Question 9

What is an emulsifier?

Answer 9

Ingredient that brings two normally incompatible materials together and binds them into a uniform and fairly stable solution

Question 10

What is a surfactant?

Answer 10

Substance that allows oil & water to mix. (A type of emulsifier (ingredient)

Question 11

Describe the surfactant molecule parts :

Answer 11

Head = hydrophilic= water loving
Tail = lipophilic = oil loving

        OIL      ———O    WATER
                   (tail) (head)

Question 12

Oil in water O/W emulsion is

Answer 12

Water based, not as greasy & primarily used in salon, spas, barbers

Question 13

Water in oil W/O emulsiona:

Answer 13

Oil based, greasier, examples: styling creams, cold creams, suntan lotions foot balms