solubility

Question 1

mixtures

Answer 1

-a physical combination of two or more substances
-organized by particle size and appearance
-can either be heterogenous or homogenous

Question 2

heterogenous mixture

Answer 2

-not a uniform composition
-can either be suspension or colloid

Question 3

suspension

Answer 3

-particles are less than 1000 nm
-particles settle
-can filter

Question 4

colloid

Answer 4

-greater than 1 nm
-do not settle
-cannot filter
-do tyndall effect

Question 5

tyndall effect

Answer 5

-particles have the ability to scatter light
-ex. headlights in fog

Question 6

homogenous mixture

Answer 6

-uniform composition
-also known as solution
-do not settle/ separate on standing
-cannot be filtered
-0.01-1 nm
-do not scatter light

Question 7

solutions

Answer 7

-aka homogenous mixture
-two or more substances in a single phase

Question 8

solvent

Answer 8

-does the dissolving

Question 9

universal solvent

Answer 9

water

Question 10

solute

Answer 10

-substance being dissolved
-can be one or more solutes in the solution

Question 11

alloy

Answer 11

-solutions of two metals
-ex. brass is a mixture of copper and zinc
-ex. bronze is a mixture of copper and tin

Question 12

why are alloys created?

Answer 12

-to increase strength of metals
-make them more hesitant to corrosion

Question 13

unsaturated solution

Answer 13

-contains less than the maximum amount of solute possible

Question 14

saturated solution

Answer 14

-contain all the solute taht is possible to dissolve under a given set of conditions

Question 15

supersaturated solution

Answer 15

-unstable solutions that have been forced to dissolve more solute than should be possible under a given set of conditions

Question 16

soluble

Answer 16

-the amount of substance required to form a saturated solution with a specific amount of solvent at a specified temperature

Question 17

how does temp affect solubility?

Answer 17

-gases become less soluble with increased temperature

Question 18

how does pressure affect solubility?

Answer 18

-pressure increases as volume decreases

Question 19

what other factors affect solubility?

Answer 19

-heat
-stirring/ shaking
-saturated

Question 20

concentration

Answer 20

-measure of the amount of solute in a given amount of solvent or solution
-it is a ratio

Question 21

what are the three expressions of concentration?

Answer 21

-molarity
-ppm (parts per million)
-ppb (parts per billion)

Question 22

molarity

Answer 22

-number of moles of solute in one liter of solution
-M = mol/ L

Question 23

dilutions

Answer 23

-how concentrated a solution is
-M1V1=M2V2