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Bank of Introduction to chemistry - Measures and Calculations

Total questions: 117

Worksheet time: 2hrs 6mins

Name
Class
Date
1.

Why to study chemistry?

a)

Chemistry explains things in the natural world.

b)

Many careers use chemistry.

c)

Informed citizens need a knowledge of chemistry.

d)

All the options are correct.

2.

The scope of chemistry is so vast, there are five traditional areas of study in chemistry. Which one is not one of the areas of study in chemistry?

a)

Chemical engineering

b)

Organic chemistry

c)

Physical chemistry

d)

Biochemistry

3.

One of the big ideas of chemistry is

a)

Chemistry is divided into 5 traditional branches.

b)

There are three types of sciences.

c)

6.023X10^23 is a Mol or amount of substance in chemistry.

d)

Chemistry is the understanding of the natural world.

4.

One of the branches of chemistry that deals with the use of chemical knowledge to manufacture products on a commercial scale is called.

a)

Industrial chemistry

b)

Organic chemistry

c)

Physical chemistry

d)

Inorganic chemistry

5.

The study of the composition, structure, and properties of matter and the changes it undergoes, is in charge of

a)

Chemistry

b)

Physics

c)

Biology

d)

Biochemistry

6.

The study of carbon-containing compounds.

a)

Organic Chemistry

b)

Inorganic Chemistry

c)

Physical Chemistry

d)

Biochemistry

7.

The study of compounds that do not contain carbon.

a)

Organic Chemistry

b)

Inorganic Chemistry

c)

Biochemistry

d)

Analytical Chemistry

8.

The branches of Analytical chemistry are:

a)

Biochemistry and physical chemistry.

b)

Organic and Inorganic chemistry

c)

Quantitative and Qualitative

d)

Nuclear and Industrial.

9.

The study of properties, changes in matter, relationship with internal energy, and nucleus behavior is called

a)

Physical Chemistry

b)

Biochemistry

c)

Organic Chemistry

d)

Inorganic Chemistry

10.

Compounds like lipids, proteins, carbohydrates, etc., are studied by one of the chemistry branches called ___________

a)

Organic chemistry

b)

inorganic Chemistry

c)

Environmental chemistry

d)

Biochemistry.

11.
Question Image

Match the following concepts related to the branches of Chemistry

a)

Study of the composition of a substance in terms of qualities and quantities.

1.

Analytical Chem.

b)

Branche in charge of the study of carbon compounds

2.

Organic Chem.

c)

Study of matter and how it is related with the whole processes of the living things

3.

Biochemistry

d)

Study of elements and compounds that do not necessarily are related with carbon composition.

4.

Inorganic chem.

e)

Study of the behavior and changes of matter related with energy and transformations in the nuclei of atoms,

5.

Physical chem

12.

Science is defined as ____________________

4 lines
13.

All these are branches of Human Sciences except _______________.

a)

Government

b)

Religion

c)

Anthropology

d)

Chemistry

14.

(Complete the sentence).

Some of the characteristics of Science are _______________, _________________, ____________________, _________________, and ________________.

(a)  

15.

Science can be divided into main fields such as:

(a)  

16.
A collection of beliefs such, such as astrology, is known as...
a)
Pseudoscience 
b)
Fact
c)
Theory
d)
Law
17.
In order for an explanation to be considered scientific, it must be based on ____________.
a)
an inference
b)
a conclusion
c)
past experience
d)
evidence
18.
Which is not a pseudoscience?
a)
Religion
b)
Astrology
c)
Superstitions
d)
Ecology
19.
The word stem pseudo- means:
a)
false
b)
true
c)

real

d)
science
20.
If something cannot be observed using the 5 senses, is not testable or repeatable, then it is not science. 
a)
True
b)
False
21.
Science or Pseudoscience:  Personal bias and the opinion of the scientist.
a)
Science
b)
Pseudoscience
22.
Which one the following is NOT a branch of science, but a pseudoscience because it not testable, repeatable and observable by scientific standards. 
a)
A. astronomy: study of physical objects (such as stars, galaxies, planets, moons, asteroids, comets and nebulae) and processes (such as supernovae explosions, gamma ray bursts, and cosmic microwave background radiation)
b)
B. physics: the study of properties of matter and energy (mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms)
c)
C. biology: the study of living organisms
d)
D. astrology: the study of how the positions of the stars and movements of the planets have a supposed influence on events and on the lives and behavior of people
23.
Science or Pseudoscience:  Changing the data so that it supports my prediction.
a)
Science
b)
Pseudoscience
24.
Science or Pseudoscience:  Designing an experiment to test the durability of a new type of rope.
a)
Science
b)
Pseudoscience
25.
Science or Pseudoscience:  Using technology to measure distance during an investigation.
a)
Science
b)
Pseudoscience
26.
Is the systematic study of natural events and conditions.  It is NOT based on opinions. 
a)
Science
b)
pseudoscience
c)
theory
d)
fieldwork
27.

The beaker contains 250 mL of acetone.

a)

Qualitative Observation

b)

Quantitative Observation

28.

The beaker is made of glass.

a)

Qualitative Observation

b)

Quantitative Observation

29.

The humidity level is 89.2%

a)

Qualitative observation

b)

Quantitative Observation

30.

The alloy is made up of copper and zinc.

a)

Qualitative observation

b)

Quantitative Observation

31.

The piece of magnesium ribbon is silver in color with blackened edges.

a)

Qualitative observation

b)

Quantitative Observation

32.

The temperature of the liquid rose to 97.8 °C.

a)

Qualitative observation

b)

Quantitative Observation

33.

The rock sample contains 78.1% limestone.

a)

Qualitative observation

b)

Quantitative Observation

34.

An observation is ____.

a)

a problem

b)

a hypothesis

c)

information from you senses

d)

something that shows the truth

35.

Qualitative observations

a)

are characteristics and descriptions

b)

have a number

36.

Quantitative observations

a)

are characteristics and descriptions

b)

use a number

37.

The temperature is 18 degrees Celsius today.


Is this a QUALITATIVE OR QUANTITATIVE observation?

a)

qualitative observation

b)

quantitative observation

38.

It is hot and sunny today.


Is this a QUALITATIVE or QUANTITATIVE observation?

a)

qualitative observation

b)

quantitative observation

39.

There are 16 birds in the tree.


Is this a QUALITATIVE or QUANTITATIVE observation?

a)

qualitative observation

b)

quantitative observation

40.

Galapagos turtles weigh 500 pounds.


Is this a QUALITATIVE or QUANTITATIVE observation?

a)

qualitative observation

b)

quantitative observation

41.

The Potomac River is polluted, brown, and dirty.


Is this a QUALITATIVE or QUANTITATIVE observation?

a)

qualitative observation

b)

quantitative observation

42.

There are _ SI base units.

(a)  

43.

The SI base unit of length is the

(a)  

44.

The SI base unit of mass is the

(a)  

45.

The SI base unit of temperature is

(a)  

46.

The SI base unit of time is

(a)  

47.

The SI base unit of quantity of substance is

(a)  

48.

The SI base unit of luminosity is

(a)  

49.

The SI base unit of Electric current is

(a)  

50.

A measure of how hot or cold an object is

a)

temperature

b)

liter

c)

kilogram

d)

kelvin scale

51.

The SI base unit of mass

a)

temperature

b)

liter

c)

kilogram

d)

kelvin scale

52.
Which of the following pairs of physical quantity and SI unit is correct ?
a)

Mass - SI unit : kilogram

b)
Time - SI unit : Hour
c)
Electric current - SI unit : Volt
d)

Temperature - SI unit : Celcius

53.
Standard measurement system based on the number 10
a)
Metric System
b)
International System of Units (SI)
c)
Density
d)
Weight
54.

What is volume?

a)

the measure of the force of gravity

b)

a measure of the energy of motion of the particles in a substance

c)

the amount of space taken up by an object or substance

d)

the measure of how much mass is contained in a given space

55.

We measure the mass of an item using this scientific tool.

a)

graduated cylinder

b)

flask

c)

digital scale

d)

triple beam balance

56.
What is the mass on this triple beam?
a)

40.1 g

b)
1g
c)

41Kg

d)
41g
57.
How many sig figs are there?
100.00
a)
1
b)
3
c)
4
d)
5
58.
How many sig figs are there?
0.000008
a)
1
b)
2
c)
6
d)
7
59.
How many sig figs are there?
0.00400
a)
1
b)
3
c)
5
d)
6
60.
How many sig figs are there?
9009.00
a)
2
b)
4
c)
5
d)
6
61.
How many sig figs are there?
0.0009009090000
a)
3
b)
10
c)
14
62.
How many sig figs are there?
27000000
a)
2
b)
5
c)
8
63.
How many sig figs are there?
4000.
a)
1
b)
3
c)
4
64.
How many significant figures does the following number have?
0.00345
a)
6
b)
5
c)
3
d)
Ambiguous: 3,4,5, or 6
65.
How many significant figures does the following number have: 0.00204
a)
6
b)
4
c)
3
d)
2
66.

How many significant figures does the following number have?1.2500 x 10310^3  

a)
5
b)
3
c)

Ambiguous: 3 or 5

d)

7

67.
How many sig figs are there?
100.00
a)
1
b)
3
c)
4
d)
5
68.
How many sig figs are there?
100000000
a)
1
b)
9
c)
10
69.
How many sig figs are there?
4004
a)
1
b)
2
c)
3
d)
4
70.
How many sig figs are there?
9009.00
a)
2
b)
4
c)
5
d)
6
71.
How many sig figs are there?
0.00400
a)
1
b)
3
c)
5
d)
6
72.
How many sig figs are there?
5.00000008
a)
2
b)
6
c)
9
73.
How many sig figs are there?
27000000
a)
2
b)
5
c)
8
74.

How many sig figs are there?
9000.

a)
1
b)
3
c)
4
75.
Which of the following numbers have four significant figures?
a)
56.75 g
b)
40.01 g
c)
0.6000 g
d)
all of the choices
76.
All of the following have one significant figure except:
a)
100 cm
b)
0.0001 cm
c)
2 cm
d)
2.00 cm
77.
Which of the following numbers has three significant figures?
a)
1014 miles
b)
101 feet
c)
1000 yards
d)
all of the choices
78.
How many significant figures does the following number have: 0.998005
a)
9
b)
10
c)
6
d)
5
79.
How many significant figures does the following number have: 0.002040
a)
6
b)
4
c)
3
d)
2
80.
How many sig figs are there?
0.000008
a)
1
b)
2
c)
6
d)
7
81.

What is 78.5 rounded to one significant figure?

a)

79

b)

78.5

c)

70

d)

80

82.

Round 0.010229 to four significant figures

a)

1022

b)

1023

c)

0.01023

d)

0.01022

83.

What is 0.658 rounded to 1 significant figure?

a)

0

b)

0.66

c)

0.7

d)

0.658

84.

What is 7.555 rounded to two significant figures?

a)

7.6

b)

7.5

c)

70

d)

76

e)

7.60

85.
Round 52689 to 3 significant figures.
a)
526
b)
527
c)
52600
d)
52700
86.
Round 0.00258954 to 4 significant figures.
a)
0.0025
b)
0.002589
c)
0.002580
d)
0.002590
87.
Round 1235 to 2 significant figures.
a)
12
b)
1200
c)
1200.
d)
1200.00
88.

What must be true for the number "a" in scientific notation. Select all that apply.

a)

must be less than 10

b)

must be greater than 1

c)

must be greater than or equal to 1

d)

must be less than or equal to 10

e)

must be less than 1

89.

Write the following number in scientific notation.

360

a)

3.6×1023.6\times10^2  

b)

0.36×1020.36\times10^2  

c)

3.6×1033.6\times10^3  

d)

3.6×10−23.6\times10^{-2}  

90.

Write the following number in scientific notation.

0.052

a)

5.2×1015.2\times10^1  

b)

5.2×10−15.2\times10^{-1}  

c)

5.2×10−25.2\times10^{-2}  

d)

5.2×1025.2\times10^2  

91.

Write the following number in standard form. Type your answer with no spaces.

5.7×10−15.7\times10^{-1}  

(a)  

92.

Write the following number in standard form. Type your answer with no spaces and write commas.

4.35×1054.35\times10^5  

(a)  

93.

How would you write 4.3756 x 104 in standard form? Type your answer with no spaces and write commas.

(a)  

94.

How would you write -5.6 x 10-3 in standard form? type your answer with no spaces

(a)  

95.

How do you write 8.317 x 106 in standard form?Type your answer with no spaces and write commas.

(a)  

96.

Express the following in scientific notation:


.000457

a)

457 x 106

b)

457 x 10-6

c)

4.57 x104

d)

4.57 x 10-4

97.

Convert this number to standard notation: Type your answer with no spaces and write commas if necessary.


7.1 x 104

(a)  

98.

Convert this number to standard notation:

Type with no spaces

1.4 x 10-2

(a)  

99.
The rule of scientific notation is to write all exponents with a base of ____.
a)
50
b)
5
c)
100
d)
10
100.
Which of the following is NOT true of scientific notation?
a)
The number in front must be between 1 and 9.9
b)
The exponent tells you how many times the decimal was moved
c)
It shortens big numbers
d)
It doesn't always contain x10
101.

Convert 4.2 seconds to hours. Round to three sig figs.

a)

0.00117 s

b)

0.0117 s

c)

0.001666 s

d)

1.16666 s

102.

Convert 4.2 seconds to hours. Round to three sig figs.

103.

Convert 354 grams to kg. Round to two sig figs

a)

0.35 Kg

b)

0.354 Kg

c)

0.0035 Kg

d)

0.035 Kg

104.

Convert 50 decimeters to kilometers.

a)

0.05 Km

b)

0.5 Km

c)

0.005 Km

d)

50,000 Km

105.

How many kilograms of calcium are there in 173 pounds of calcium? (1 pound = 453.59 grams; 1 kg = 1000 g). Round to two sig figs.

a)

78.4715 Kg

b)

78.5 Kg

c)

78 Kg

d)

80 Kg

106.

How many m are in 2 mile? Round to three S.F.

a)

3218.69 m

b)

3220 m

c)

3219 m

d)

3.22 m

107.

What will the resulting units be?

a)

inches

b)

feet

c)

meters/ft

d)

inches/ft

108.
A 12-ounce bottle of shampoo lasts Enrique 16 weeks. How long would you expect an 18-ounce bottle of the same brand to last him?
a)
24 Weeks
b)
24-ounce bottle
c)
10.6 Weeks
d)
10.6-ounce bottle
109.

40 ft = __________ mm. Round the answer to three S.F.

a)

12192 mm

b)

40000 mm

c)

12200 mm

d)

1220mm

110.

The Olympic record for the high jump is just over 2.6 yards. What is that distance in m? (1 yard= 3 feet)

Round to three S.F.

a)

0.867m

b)

2.37744 m

c)

2.38 m

d)

23.77 m

111.
You know 1000 mg = 1 g.  Convert 2.5 grams into milligrams.
a)
25 mg
b)
25,000 mg
c)
250 mg
d)
2500 mg
112.

A 30 g serving of a certain breakfast cereal has 0.5 g of salt. How much salt would that be in milligrams?

a)

500mg

b)

480mg

c)

720mg

d)

375mg

113.

Convert 1,800 grams to kilograms.

a)

18 kilograms

b)

1.8 kilograms

c)

180 kilograms

d)

0.18 kilograms

114.

What would be the final units of this problem?

a)

feet/minute

b)

yards/minute

c)

yards/second

d)

seconds/feet

115.

What will the resulting units be?

a)

cubic feet per day

b)

gallons per day

c)

gallons per hour

d)

cubic feet per hour

116.

What will the resulting units be?

a)

cubic feet per day

b)

gallons per day

c)

gallons per hour

d)

cubic feet per hour

117.

What will the resulting units be?

a)

cups per day

b)

pints per hour

c)

cups per week

d)

pints per day

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