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calculation concentration

Total questions: 79

Worksheet time: 1hrs 8mins

Name
Class
Date
1.

molarity equation

(a)  

2.

molarity

(a)  

3.

making a molar solutions step one

a)

A weighed amount of a substance (the solute) is put into the volumetric flask, and a small quantity of water is added.

b)

the solid is dissolved in the water by gently swirling the flask (with a stopper in place).

c)

more water is added, until the level of the solution just reaches the mark etched in the neck of the flask.

4.

making a solution common mistake

(a)  

5.

making dilutions using molarity equation

(a)  

6.

making dilute solutions-

you can only

(a)  

7.

mass percent

(a)  

8.

mass percent equation

(a)  

9.

volume percent

(a)  

10.

volume percent equation

(a)  

11.

a solution

(a)  

12.

solvent

(a)  

13.

solute

(a)  

14.

Coca cola-

carbon dioxide gas

a)

solute

b)

solvent

15.

Coca cola-

water

a)

solute

b)

solvent

16.

Coca cola-

sugar

a)

solute

b)

solvent

17.

Coca cola-

caffeine

a)

solute

b)

solvent

18.

Air-

carbon dioxide

a)

solute

b)

solvent

19.

Air-

oxygen

a)

solute

b)

solvent

20.

Air-

nitrogen

a)

solute

b)

solvent

21.

Air-

water

a)

solute

b)

solvent

22.

Nature of the structure- some compounds are more soluble than others based on their (a)  

23.

If in ionic compounds the attraction for the ions is greater than that of the water, then the substance (a)   dissolve well in water

24.

in general, (a)   temperatures dissolve substances better

25.

agitation- the more a solution is stirred, mixed, etc. , the (a)   the substance dissolves

26.

particle size-

the smaller a particle, the (a)   the substance dissolves

27.

does the nature of the solution affect the amount of solid that will dissolve

a)

yes

b)

no

28.

does the temperature affect the amount of solid that will dissolve

a)

yes

b)

no

29.

does the agitation affect the amount of solid that will dissolve

a)

yes

b)

no

30.

does the particle size affect the amount of solid that will dissolve

a)

yes

b)

no

31.

the nature of a solute- some gases dissolve better in liquids than others based on their molecular

(a)  

32.

in general, (a)   temperatures dissolve gases better

33.

agitation- the more a solution is stirred, mixed, etc. , the (a)   a gas dissolves

34.

pressure- the higher the pressure, the (a)   a gas dissolves

35.

unsaturated solution

(a)  

36.

saturated solution

(a)  

37.

supersaturated solution

(a)  

38.

you have a container of 100 ml water that can hold 30 grams of salt while actually having 40 grams.

a)

saturated

b)

supersaturated

c)

unsaturated

39.

you have a container of 100 ml water that can hold 30 grams of salt while actually having 25 grams.

a)

saturated

b)

supersaturated

c)

unsaturated

40.

if the salt (a)   crystallize out then the solution is supersaturated because it contains more than the maximum at the new cooler temperature.

41.

a supersaturated solution can be made to crystallize by adding a (a)   crystal

42.

what is a seed crystal

(a)  

43.

dilute solution

(a)  

44.

concentration solution

(a)  

45.

a (a)   solution is concentrated

46.

an (a)   saturated solution an be concentrated or dilute

47.

miscible

(a)  

48.

immiscible

(a)  

49.

alcohol in water

a)

miscible

b)

immiscible

50.

oil in water

a)

miscible

b)

immiscible

51.

making a molar solutions step two

a)

A weighed amount of a substance (the solute) is put into the volumetric flask, and a small quantity of water is added.

b)

the solid is dissolved in the water by gently swirling the flask (with a stopper in place).

c)

more water is added, until the level of the solution just reaches the mark etched in the neck of the flask.

52.

making a molar solutions step three

a)

A weighed amount of a substance (the solute) is put into the volumetric flask, and a small quantity of water is added.

b)

the solid is dissolved in the water by gently swirling the flask (with a stopper in place).

c)

more water is added, until the level of the solution just reaches the mark etched in the neck of the flask.

53.

Colligative properties

(a)  

54.

Colligative Properties-

example-

Vapor Pressure (a)  

55.

Colligative Properties-

example-

Boiling Point (a)  

56.

Colligative Properties-

example-

Freezing Point (a)  

57.

The phenomenon that the boiling point of a liquid will be higher when another compound is added, meaning that a solution has a higher boiling point than a pure solvent.

(a)  

58.

The number of solvent molecules escaping into vapour phase gets reduced and as a result the pressure exerted by the vapour phase is also reduced.

(a)  

59.

The decrease of the freezing point of a solvent due to the addition of a solute into the solvent.

(a)  

60.

Vapor Pressure

(a)  

61.

a state in which opposing forces or influences are balanced.

(a)  

62.

Pressure is the number of (a)   that are above (in gaseous state) a solution

63.

as the number of solute particles increase, the vapor pressure (a)  

64.

as the number of solute particles increase, the vapor pressure decreases. This is due to the water particles surrounding the solute and thus are less likely to gain enough (a)   to escape the surface

65.

Which one reduces the vapor pressure the greatest

a)

1 mole of Sucrose

b)

1 mole of NaCl

c)

1 mole of CaCL2

66.

the adding of a solute to a pure solvent (a)   the boiling point of the solvent

67.

which would increase the boiling point of water the most

a)

2 mole NaCl

b)

1 mole CaCl2

c)

3 mole of glucose

68.

the adding of a solute to a pure solvent (a)   the freezing point of the solvent

69.

particles in a pure solvent (a)   the formation of a freezing pattern

70.

which salt is better for de-icing roads

a)

40 g of NaCl

b)

40 g of CaCl2

71.

electrolyte

(a)  

72.

non electrolyte

(a)  

73.

conductivity is (a)   a colligative property

74.

conductivity is based on the number of (a)   in solution, not just the number of dissolved particles

75.

a substance that dissolves and does not produce ions will (a)   conduct electricity

76.

which solution conducts the best

a)

1 mole of NaCl

b)

1 mole of CaCl2

c)

4 mole of glucose

77.

Beers law

(a)  

78.

Chromatography

(a)  

79.

Titration

(a)