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Flashcards in C20 Terms Deck (47):
1

continuous phase

When there is an unbroken phase

2

dispersed phase

A phase that is a minority in a heterogeneous mixture and that is dispersed throughout the continuous phase

3

gel

Consist of a solid dispersed in a liquid

4

sol

If the solid in liquid mixture is more like a liquid than a gel

5

emulsion

A heterogeneous mixture that contains two or more immiscible particles

6

immiscible

Not able to dissolve into another

7

foam

Forms when a gas is whipped into a liquid so that it makes a mixture of bubbles within the liquid

8

aerosol

Tiny solid particles or liquid drops that are dispersed in a gas

9

colloidal dispersion

If the particles are between 1nm and 1um

10

suspension

Fluid mixtures whose dispersed particles are larger than 1um in size

11

Tyndall effect

When a beam of light shines through a mixture and can be clearly seen

12

solution

Uniform mixtures of pure substances that consist of a single phase

13

solute

The substance that is to be dissolved

14

solvent

The substance that does the dissolving

15

amalgam

The substance formed when mercury is dissolved in gold

16

dissociation

Ions are pulled and wedged from the crystal

17

soluble

A substance is soluble when it can be dissolved by a solvent.

18

miscible

Liquids that can freely mix in any proportion.

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solubility

The maximum amount of solute that will be dissolved in a given amount of solvent at a given temperature

20

insoluble

Solutes that cannot mix in certain solvents

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Henry's Law

States that the greater the pressure of a gas on a liquid the greater the mass of the gas that will remain dissolved at any given temperature.

22

saturated

No more solute can be dissolved in the solvent at this temperature.

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unsaturated

Solutions that contain less solute than their solubility

24

supersaturated

Has more dissolved solute than a saturated solution should have at a given temperature

25

concentration

How much solute in the solution

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percentage by mass

The percent of solute in the solution

27

mole (mol)

An SI base unit

28

molarity (M)

Solution concentration measured in intifada of moles of solute per liter of solution.

29

colligative properties

A physical property of a solvent that depends on the concentration of the solute particles and not the kind of solute.

30

freezing-point depression

The number of degrees the freezing point of a solvent is reduced per mole of dissolved solute particles a colligative property of the solvent.

31

boiling-point elevation

The number of the boiling point is raised

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osmosis

The diffusion of a fluid through a semipermeable membrane from a region of higher concentration to one of lower concentration.

33

semipermeable membrane

A thin sheet of material that allows solvent particles to pass through but not solute

34

osmotic pressure

The driving force of an osmosis

35

reverse osmosis

Water is filtered in a pressurized container

36

What kinds of substances may form mixtures?

Liquids. Solids. Gasses.

37

Name and describe the two phases of a heterogenous mixture in which one phase is mixed in anther.

Idk

38

What happens to light when it passes through a colloidal a similar colloidal dispersion?

It is refracted.

39

What is often visibly different about a suspension compared to a similar colloidal dispersion?

The light is bent and reflected

40

What gas solutions are not possible?

Liquid an solid

40

Why is water such an effective solvent?

Because the molecules are electrically charged.

40

Describe the three steps in the solution process.

The solute is placed in the solvent. Ye solute is hydrated. And the solute is dissociated.

40

How can an unstable solution become supersaturated without any solute being added or any solvent being removed?

The temperature is cooled.

41

How is the solubility of a solute related to its concentration in general?

It increases it

42

When mixing a solution to attain a certain concentration measured in percentage by mass how do you determine the amount of solvent needed?

By measuring

43

How does the presence of a solute affect the boiling point of a solvent? The freezing point?

It raises it. It lowers it.

44

How do cells control the concentration of solutes inside their cellular membranes?

By filtering them