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Chem 104 Lab Final

Total questions: 75

Worksheet time: 53mins

Name
Class
Date
1.

measure of closeness between a single measurement & a generally accepted true value (literature value)

a)

Accuracy

b)

Precision

c)

Percent Mass

d)

Percent by Volume

e)

Percent Mass by Volume

2.

a measure of how close individual measurements are to each other

a)

Accuracy

b)

Precision

c)

Percent Mass

d)

Percent by Volume

e)

Percent Mass by Volume

3.

percent composition of a solute in a solution by their masses

(AKA weight percent or percent by weight)

a)

Accuracy

b)

Precision

c)

Percent Mass

d)

Percent by Volume

e)

Percent Mass by Volume

4.

the percent composition of a solute in a solution by their volumes (AKA volume percent)

used when describing mixtures of liquids

a)

Accuracy

b)

Precision

c)

Percent Mass

d)

Percent by Volume

e)

Percent Mass by Volume

5.

the composition of mass of solute (g) in a volume of a solution (ml)

a)

Accuracy

b)

Precision

c)

Percent Mass

d)

Percent by Volume

e)

Percent Mass by Volume

6.

the number of moles of solute per liter of solution

a)

Molarity (M)

b)

Parts per Million (ppm)

c)

Percent Yield

d)

Percent Error

e)

Percent Difference

7.

mass of solute divided by total mass of solution multiplied by 106 (1 million) - used to described very low concentration solutions

a)

Molarity (M)

b)

Parts per Million (ppm)

c)

Percent Yield

d)

Percent Error

e)

Percent Difference

8.

used to determine the financial feasibility of a reaction or check experimental technique

a)

Molarity (M)

b)

Parts per Million (ppm)

c)

Percent Yield

d)

Percent Error

e)

Percent Difference

9.

calculated by determining an experimental value from your results & comparing it to expected value

a)

Molarity (M)

b)

Parts per Million (ppm)

c)

Percent Yield

d)

Percent Error

e)

Percent Difference

10.

compares 2 experimental quantities where neither of values can be considered the "correct" value

a)

Molarity (M)

b)

Parts per Million (ppm)

c)

Percent Yield

d)

Percent Error

e)

Percent Difference

11.

the reactant that is totally consumed & thus limits how much product can be made

a)

Limiting Reagent

b)

Theoretical Yield

c)

Calorimetry Experiments

d)

Bomb Calorimetry

e)

Coffee-Cup Calorimetry

12.

amount if product formed when all limiting reagent is consumed

a)

Limiting Reagent

b)

Theoretical Yield

c)

Calorimetry Experiments

d)

Bomb Calorimetry

e)

Coffee-Cup Calorimetry

13.

measure the heat exchange between a chemical system & its environment

a)

Limiting Reagent

b)

Theoretical Yield

c)

Calorimetry Experiments

d)

Bomb Calorimetry

e)

Coffee-Cup Calorimetry

14.

often involves combustion of a chemical sample in an O2 environment

a)

Limiting Reagent

b)

Theoretical Yield

c)

Calorimetry Experiments

d)

Bomb Calorimetry

e)

Coffee-Cup Calorimetry

15.

used to monitor heat transfer that occurs during a chemical reaction at constant pressure

a)

Limiting Reagent

b)

Theoretical Yield

c)

Calorimetry Experiments

d)

Bomb Calorimetry

e)

Coffee-Cup Calorimetry

16.
a)

Sample vial & cap

b)

test tube

c)

test tube holder

d)

glass stirring rod

e)

test tube brush

17.
a)

Sample vial & cap

b)

test tube

c)

test tube holder

d)

glass stirring rod

e)

test tube brush

18.
a)

Sample vial & cap

b)

test tube

c)

test tube holder

d)

glass stirring rod

e)

test tube brush

19.
a)

Sample vial & cap

b)

test tube

c)

test tube holder

d)

glass stirring rod

e)

test tube brush

20.
a)

Sample vial & cap

b)

test tube

c)

test tube holder

d)

glass stirring rod

e)

test tube brush

21.
a)

Watch glass

b)

Pipet

c)

Spatula

d)

Weight Boat

e)

Pasteur pipet

22.
a)

Watch glass

b)

Pipet

c)

Spatula

d)

Weight Boat

e)

Pasteur pipet

23.
a)

Watch glass

b)

Pipet

c)

Spatula

d)

Weight Boat

e)

Pasteur pipet

24.
a)

Watch glass

b)

Pipet

c)

Spatula

d)

Weight Boat

e)

Pasteur pipet

25.
a)

Watch glass

b)

Pipet

c)

Spatula

d)

Weight Boat

e)

Pasteur pipet

26.
a)

Pasteur pipet rubber bulb

b)

Graduated cylinder

c)

Beaker

d)

Buret

e)

Wash bottle

27.
a)

Pasteur pipet rubber bulb

b)

Graduated cylinder

c)

Beaker

d)

Buret

e)

Wash bottle

28.
a)

Pasteur pipet rubber bulb

b)

Graduated cylinder

c)

Beaker

d)

Buret

e)

Wash bottle

29.
a)

Pasteur pipet rubber bulb

b)

Graduated cylinder

c)

Beaker

d)

Buret

e)

Wash bottle

30.
a)

Pasteur pipet rubber bulb

b)

Graduated cylinder

c)

Beaker

d)

Buret

e)

Wash bottle

31.

1

a)

Buret clamp

b)

Utility clamp

c)

Ring clamp

d)

Retort stand

32.

2

a)

Buret clamp

b)

Utility clamp

c)

Ring clamp

d)

Retort stand

33.

3

a)

Buret clamp

b)

Utility clamp

c)

Ring clamp

d)

Retort stand

34.

4

a)

Buret clamp

b)

Utility clamp

c)

Ring clamp

d)

Retort stand

35.
a)

Erlenmeyer flask

b)

Vacuum flask

c)

Round Bottom Flask

d)

9 well glass plate

e)

Büchner funnel

36.
a)

Erlenmeyer flask

b)

Vacuum flask

c)

Round Bottom Flask

d)

9 well glass plate

e)

Büchner funnel

37.
a)

Erlenmeyer flask

b)

Vacuum flask

c)

Round Bottom Flask

d)

9 well glass plate

e)

Büchner funnel

38.
a)

Erlenmeyer flask

b)

Vacuum flask

c)

Round Bottom Flask

d)

9 well glass plate

e)

Büchner funnel

39.
a)

Erlenmeyer flask

b)

Vacuum flask

c)

Round Bottom Flask

d)

9 well glass plate

e)

Büchner funnel

40.
a)

Funnel seal

b)

Vacuum flask

c)

Round Bottom Flask

d)

9 well glass plate

e)

Büchner funnel

41.

if heat is released into environment from reaction - it is (a)  

42.

if heat is absorbed from environment by reaction - it is (a)  

43.

Bomb calorimetry - volume of (a)   stays constant in experiment

44.

bomb calorimetry - heat exchange between sample & environment is related to (a)   energy change of sample (ΔU)

45.

heat transferred into environment (exothermic) - qsurroundings is (a)  

46.

heat transferred into environment (exothermic) - qsystem is (a)   since system lost heat

47.

heat exchange between sample & environment at constant pressure is related to (a)   change of sample (ΔH)

48.

1 oC temp _______ = 1 K temp ______

(a)  

49.

ΔH = Negative means its

(a)  

50.

ΔH = positive means its

(a)  

51.

min energy required to remove an electron from an atom/ion

(how badly atom wants to keep its electron)

a)

Ionization energy

b)

First Ionization energy:

c)

Electron Affinity

d)

Metallic Character

52.

energy needed to remove 1 electron forma neutral atom in gas phase

a)

Ionization energy

b)

First Ionization energy:

c)

Electron Affinity

d)

Metallic Character

53.

how badly an atom wants another electron

a)

Ionization energy

b)

First Ionization energy:

c)

Electron Affinity

d)

Metallic Character

54.

how closely an elements properties match the ideal properties of a metal

a)

Ionization energy

b)

First Ionization energy:

c)

Electron Affinity

d)

Metallic Character

55.

(a)   processes always require energy

56.

energy is often released when a neutral atom in gas phase (a)   one electron

57.

sometimes energy is required to (a)   1 electron

58.

(a)   - Energy required to break bonds

59.

(a)   - energy released when new bonds form

60.

energy released when product formed is greater than energy required to break reactants

(a)  

61.

energy released when product formed is less that energy required to break reactants

(a)  

62.

neutralizations are always (a)  

63.

extra energy is released as heat

(a)  

64.

energy is absorbed as heat

(a)  

65.

energy ( (a)   ) is transferred between system & surroundings

66.

Exothermic

system ---heat---> surroundings

temp (a)  

67.

endothermic

system <---heat--- surroundings

temp (a)  

68.

Coffee Cup Calorimeter: positive value of L means heat leaded (a)   of cup

69.

Coffee Cup Calorimeter: negative value of L means heat leaked (a)   of cup

70.

Coffee cup of calorimeter: values of C (absolute values) less than (a)   J means calorimeter is a good insulator

71.

(a)   solution (pH < 7)

Red Litmus Paper: stays red

Blue Litmus Paper: turns red

72.

(a)   solution (pH > 7)

Red Litmus Paper: turns blue

Blue Litmus Paper: stays blue

73.

no color change of red or blue litmus paper means (a)   (pH = 7)

74.

lighter color means (a)   concentration

75.

darker color means (a)   concentration

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