CHEM 101 Exam Questions With Complete Solutions
All of the following are reasons why chemistry is known as the "central science", EXCEPT:
A. Many biological processes involve chemical reactions.
B. Because it intersects with and provides a basis for a variety of other scientific discipline...
CHEM 101 Exam Questions With
Complete Solutions
All of the following are reasons why chemistry is known as the "central science",
EXCEPT:
A. Many biological processes involve chemical reactions.
B. Because it intersects with and provides a basis for a variety of other scientific
disciplines.
C. Because it is crucial to understanding other scientific concepts like energy transfer.
D. Because it was created to study all other sciences. - ANSWER- Because it was
created to study all other sciences.
Which of the following questions is the best example of a question that could be
answered or explained by studying chemistry?
A. Which part of the country has the most salt-water lakes?
B. What is the identity of this unknown substance?
C. What is the angle of refraction when light enters water?
D. What is the acceleration of a race car in meters/second? - ANSWER- What is the
identity of this unknown substance?
Why is chemistry helpful in understanding how a toaster creates the brown color and
crispy texture of toast?
A. The properties of the bread molecules are changing in the toaster.
B. The toaster uses electricity.
C. The composition and/or properties of the surface of the toast are somehow changed
by the toaster.
D. The process takes place in the atmosphere. - ANSWER- C. The composition and/or
properties of the surface of the toast are somehow changed by the toaster.
Which word BEST completes the sentence below:
_________ are any substance made up of matter and can be natural or man-made.
,A. atoms
B. chemicals
C. molecules
D. elements - ANSWER- B. chemicals
Chemistry helps to create:
A. New mathematical equations
B. New ideas about how humans connect
C. New ways to harness renewable energy
D. New theories on spiritual connections - ANSWER- C. New ways to harness
renewable energy
Chemistry is best defined as the study of which of the following?
A. the properties of living organisms
B. the electrical nature of matter
C. the properties and history of the earth's physical structure and substance
D. the properties and interactions of matter - ANSWER- D. the properties and
interactions of matter
Which of the following are involved in the study of chemistry?
A. the motion of planets in outer space
B. the structure and function of organs in living systems
C. the interactions between energy and matter
D. The changes in the composition and structure of matter - ANSWER- D. The changes
in the composition and structure of matter
Many sciences are important in understanding how hormones are synthesized in the
body. Which science would a doctor be required to have a basic knowledge of in order
to understand these chemical processes?
A. chemistry
B. biology
C. ecology
D. physiology - ANSWER- A. chemistry
Chemistry provides a basis for all of the following EXCEPT?
A. medicine
B. cleaning products
C. environmental science
D. astrology - ANSWER- D. astrology
,Which field is referred to as the central science?
A. physics
B. chemistry
C. biology
D. geology - ANSWER- B. chemistry
Which of the following is not reliant on an understanding of chemistry?
A. geology
B. biotechnology
C. agriculture
D. mathematics - ANSWER- D. mathematics
True or false: the study of science has been organized into multiple fields, because it is
too multifaceted to be studied as a whole. - ANSWER- true
Which is NOT a scientific field that is requires a knowledge of chemistry?
A. physics
B. sociology
C. astronomy
D. biology - ANSWER- B. sociology
Explain why chemistry is sometimes called "The Central Science"
Chemistry is typically studied in the central years (tenth and eleventh grade) of a high
school education.
Chemistry is the most important discipline in science.
Chemistry is highly interconnected with so many other scientific disciplines.
Other fields of science only connect to each other through chemistry. - ANSWER-
Chemistry is highly interconnected with so many other scientific disciplines.
Which of the statements does not describe matter?
Matter takes up space.
Matter can exist in different phases.
Matter has mass due to its atoms.
Matter is composed of only one type of atom. - ANSWER- Matter is composed of only
one type of atom.
Which of the following statements about the scientific method is true?
, It is a systematic approach to research.
It begins with performing an experiment.
A hypothesis is formed at the end of the the process.
The process provides the basis for the formation of laws. - ANSWER- It is a systematic
approach to research.
Characterize the following statement: If you drink coffee before going to bed, it will take
longer to fall asleep.
observation
hypothesis
theory
law - ANSWER- hypothesis
"The higher the pH of the water in a pond, the higher the algae growth." This statement
is an example of a _____________.
law
theory
fact
hypothesis - ANSWER- hypothesis
A tentative explanation of observations that acts as a guide for gathering and checking
information is called a:
hypothesis
law
theory
scientific method - ANSWER- hypothesis
How many SigFigs are present in the value: 100,300
A. 2
B. 3
C. 4
D. 5
E. 6 - ANSWER- 4
What is the correctly reported answer to the problem shown? 0.1/ - ANSWER- 0.11
Units - ANSWER- standard of comparison for measurements
exact number - ANSWER- number derived by counting or by definition
uncertainty - ANSWER- estimate of amount by which measurement differs from true
value
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