Science 9 Module

1. 9
Consumer Chemistry
Quarter 1- Module 1
INTRODUCTION TO
ORGANIC CHEMISTRY
Region I
ALAMINOS CITY DIVISION
Alaminos City, Pangasinan
Project Write, Write, Write
Alternative Instructional
Module

2. Development Team of the Module
Writer: Vivian R. Camba
Editors: Cecilia M. Nisperos, Jose Ramil A. Sibun
Reviewers: Cecilia M. Nisperos, Jose Ramil A. Sibun
Illustrators: Aldrin R. Gomez, Richard T. Isidro
Layout Artist: James Ronald V. Santiago
Management Team: Lorna G. Bugayong, PhD, CESO VI
Schools Division Superintendent
Rosario O. Cabrera
Assistant Schools Division Superintendent
Cecilia M. Nisperos., EPS, Science
Ronald B. Radoc, EdD, EPS, LRMS
CONSUMER CHEMISTRY 9
Alternative Instructional Module
Quarter 1 – Module 2: INTRODUCTION TO ORGANIC CHEMISTRY
First Edition, 2020
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3. 9
Consumer Chemistry
Quarter 1 – Module 1
Introduction to
Organic Chemistry

4. 1
Notes to the Teacher
This contains helpful tips or strategies that will
help you in guiding the learners.
Introductory Message
For the facilitator:
Welcome to the Consumer Chemistry 9 Alternative Instructional Module, Quarter 1, Module 1:
INTRODUCTION TO ORGANIC CHEMISTRY!
This module was collaboratively designed, developed and reviewed by educators both from public
and private institutions to assist you, the teacher or facilitator in helping the learners meet the
standards set by the K to 12 Curriculum while overcoming their personal, social, and economic
constraints in schooling.
This learning resource hopes to engage the learners into guided and independent learning activities at
their own pace and time. Furthermore, this also aims to help learners acquire the needed 21st century
skills while taking into consideration their needs and circumstances.
In addition to the material in the main text, you will also see this box in the body of the module:
As a facilitator you are expected to orient the learners on how to use this module. You also need to
keep track of the learners' progress while allowing them to manage their own learning. Furthermore,
you are expected to encourage and assist the learners as they do the tasks included in the module.

5. 2
For the learner:
Welcome to the Consumer Chemistry 9 Alternative Instructional Module, Quarter 1, Module 1:
INTRODUCTION TO ORGANIC CHEMISTRY!
The hand is one of the most symbolized part of the human body. It is often used to depict skill, action
and purpose. Through our hands we may learn, create and accomplish. Hence, the hand in this
learning resource signifies that you as a learner is capable and empowered to successfully achieve the
relevant competencies and skills at your own pace and time. Your academic success lies in your own
hands!
This module was designed to provide you with fun and meaningful opportunities for guided and
independent learning at your own pace and time. You will be enabled to process the contents of the
learning resource while being an active learner.
This module has the following parts and corresponding icons:
What I Need to Know
This will give you an idea of the skills or
competencies you are expected to learn in the module.
What I Know
This part includes an activity that aims to check what
you already know about the lesson to take. If you get
all the answers correct (100%), you may decide to
skip this module.
What’s In
This is a brief drill or review to help you link the
current lesson with the previous one.
What’s New
In this portion, the new lesson will be introduced to
you in various ways such as a story, a song, a poem, a
problem opener, an activity or a situation.
What is It
This section provides a brief discussion of the lesson.
This aims to help you discover and understand new
concepts and skills.
What’s More
This comprises activities for independent practice to
solidify your understanding and skills of the topic.
You may check the answers to the exercises using the
Answer Key at the end of the module.
What I Have Learned
This includes questions or blank sentence/paragraph to
be filled in to process what you learned from the
lesson.
What I Can Do
This section provides an activity which will help you
transfer your new knowledge or skill into real life
situations or concerns.
Assessment
This is a task which aims to evaluate your level of
mastery in achieving the learning competency.

6. 3
Additional Activities
In this portion, another activity will be given to you to
enrich your knowledge or skill of the lesson learned.
This also tends retention of learned concepts.
At the end of this module you will also find:
References This is a list of all sources used in developing this
module.
The following are some reminders in using this module:
1. Use the module with care. Do not put unnecessary mark/s on any part of the module. Use a
separate sheet of paper in answering the exercises.
2. Don’t forget to answer What I Know before moving on to the other activities included in the
module.
3. Read the instruction carefully before doing each task.
4. Observe honesty and integrity in doing the tasks and checking your answers.
5. Finish the task at hand before proceeding to the next.
6. Return this module to your teacher/facilitator once you are through with it.
If you encounter any difficulty in answering the tasks in this module, do not hesitate to consult
your teacher or facilitator. Always bear in mind that you are not alone.
We hope that through this material, you will experience meaningful learning and gain deep
understanding of the relevant competencies. You can do it!

7. 4
Understand the key concepts in organic chemistry, and the uses and benefits of
organic compounds to one’s health, industry, and the environment.
What I Need to Know
Organic chemistry is the area of chemistry that involves the study of carbon and its
compounds. Carbon is now known to form a seemingly unlimited number of compounds. The
uses of organic compounds impact our lives daily in medicine, agriculture, and general life.
In this module, you will be able to learn the importance organic chemistry to your life
and be able to trace the development of the history of organic chemistry.
MOST ESSENTIAL LEARNING COMPETENCY
After using this module, you are expected to attain the following objectives
 Define organic chemistry
 Cite the importance of chemistry in our lives
 Recognize the contributions of some scientist in organic chemistry
 Trace the development of the history of chemistry.
Let’s explore the world of organic chemistry. Have fun learning!
What I Know
Direction: Read the following questions carefully and write only the letter of the correct
answer on a separate sheet of paper.
1. What is Organic Chemistry?
A. It is the study of the structure, properties, composition, reactions, and preparation of
carbon-containing compounds.
B. It is the branch of chemistry which deals with the study of properties, composition
structure and changes of matter
C. It is the science of obtaining, processing, and communicating information about the
composition and structure of organic matter.
D. It is branch of science concerned with the chemical and physicochemical processes
and substances that occur within living organisms

8. 5
2. All of the following can combine with carbon to form an organic compound EXCEPT
A. copper
B. oxygen
C. nitrogen
D. hydrogen
3. Which of the following is TRUE about organic chemistry?
A. Several careers need understanding of the application of organic chemistry like
engineering and astronomy
B. Organic chemistry is the study of life and all chemical reactions are related to life.
C. Organic chemistry is necessary in the field of electronics and communication.
D. Organic chemistry helps to solve problems involving air pollution and solid
wastes.
4. Which of the following natural organic materials is very useful in clothing?
A. Nylon
B. Cotton
C. Kevlar
D. Polyester
.
5. Which scientist – discovery pair is CORRECT?
A. Kekule - soap
B. Carothers - nylon
C. Bayer - benzene
D. Pasteur - salicylic acid
6. There are over five million organic compounds known today and an almost infinite
number of new compounds could possibly be synthesized. This can be compared to the
total number of inorganic compounds, which is approximately half a million. What do you
think will happen if these organic chemicals are produced continually in quantities?
A. Most of these chemicals naturally decomposed in the environment.
B. These organic products can cause pollution if they are improperly disposed.
C. Man’s life becomes comfortable because of the vast increase of organic products.
D. There are varieties of commercial products that are always available in the market.
7. Organic Chemistry was originally limited to study of compounds which are .
A. existing naturally
B. man-made products
C. produced by living organisms
D. synthetic and natural products
8. Which organic compound produced from the reaction between the inorganic compounds
lead cyanate and the aqueous ammonia?
A. Urea
B. Silica
C. Cyanide
D. Carbides

9. 6
9. Who introduced the term, Organic Chemistry to describe the study of compounds isolated
from nature?
A. Jöns Jacob Berzelius
B. Hermann Emil Louis
C. William Henry Perkin
D. Friedrich August Kekulé
10. All of the following found in food are organic compounds EXCEPT:
A. fats
B. proteins
C. minerals
D. carbohydrates
For item 11, refer to the information below.
I. Friedrich August Kekulé proposed the structure of benzene
II. Vauquelin and his student Robiquet isolated the first known amino acid.
III. William Perkin discovered the first synthetic organic dye, mauveine, made from
aniline.
IV. Jons Jacob Berzelius introduced the term, Organic Chemistry to describe the study
of compounds isolated from nature
11. Which of the following is the correct chronological order of the development of the
history of organic chemistry?
A. I → II → III → IV
B. I → II → IV → III
C. II → IV → III → I
D. II → I → III → IV
12. Friedrich Wohler is known as the father of modern organic chemistry. What is his
greatest contribution to organic chemistry?
A. He introduced the process of making soap and detergent.
B. He developed the concept of tetravalent structure of carbon
C. He developed synthetic method of producing indigo from petrochemicals
D. He prepared organic compound, urea, from the reaction of lead cyanate and
aqueous ammonia.
13. Which organic compound – use is NOT correctly paired?
A. Alcohol – disinfectant
B. Methane – fuel in biogas
C. Acetone – nail polish remover
D. Aspirin – medicine for diarrhea

10. 7
ORGANIC CHEMISTRY
14. Which areas of human needs does octane useful?
A. Food
B. Shelter
C. Clothing
D. Transportation
15. All of the following are importance of organic chemistry in our lives EXCEPT
A. Several careers apply an understanding of organic chemistry
B. It deals with few chemical compounds found in the environment.
C. All of the chemical reactions in organic chemistry are related to life
D. It plays a part in the development of common household chemicals, foods, etc.
Try to remember the questions which you were not able to answer as you read the
module and perform the activities and exercises. Find the answers to these questions in the
lessons that follow. Have a great day of learning!
The science of Organic Chemistry has a broad and diverse past with many
investigators from many countries making discoveries that when combined over 200 years
led to the field of Organic Chemistry. The intrigue found with substances that contain carbon,
organic compounds, arose because so many different substances could be found in nature and
many of them had medicinal uses. The discovery of a laboratory synthesis of urea by
Friedrich Wöhler (1828) showed that organic chemicals did not have to be prepared by the
vital forces of nature but could also be prepared by humans, thus opening the way for the
field of synthetic organic chemistry.
Why do you need to study organic chemistry?
You are studying organic chemistry at a time of its greatest influence on our daily
lives, at a time when it can be considered a mature science, when the challenging questions
to which this knowledge can be applied have never been more important..

11. 8
What’s In
Chemistry is a branch of science which deals with the study of matter, its properties,
compositions and structures, the changes it undergoes and the laws and principles governing
such changes.
What is matter? What are phases of matter? Kindly give examples.
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________.
There are five primary branches of chemistry namely: physical chemistry,
organic chemistry, inorganic chemistry, analytical chemistry, and biochemistry
In this module, we will be dealing with organic chemistry. You will be introduced in
the world of organic compounds.
What’s New
Organic Chemistry is the study of carbon compounds, excluding CO, CO2, CS2 and
various bicarbonates, carbonates, and cyanides, which are traditionally considered to be
inorganic compounds.
Why is organic chemistry important?
Organic chemistry is the study of organic compounds which are important to our daily
lives. Our bodies are made up of organic compounds. Most household chemicals are organic
compounds. The materials we are using like clothes, medicines and other health sanitations
are made of organic compounds. We can’t live without food composed of organic compounds
viz carbohydrates, proteins, fats and even vitamins.
Let’s find out the importance of organic chemistry by doing the activity below.
Activity 1: Organic Chemistry and I
Objective: At the end of the activity, you should be able to identify the importance of
organic chemistry
Materials: paper and pen
Procedure:
A. Word Search: Look for the 10 organic materials you need in your daily activities in the
word grid. Then classify them into what areas of human needs they belong.

12. 9
ORGANIC WORD SEARCH
A N T I B I O T I C S
N G R S U G A R M L V
U K E C O A L P K U I
T Y V N M C C O V M N
D P A P E R O L Y B E
R S I L K S H D U E G
R U B B E R O E I R A
Q W G A S O L I N E R
Organic Materials Areas of Human Needs
B. Give at least 2 important contributions/products of Organic Chemistry on each of the
following areas of human needs.
1. Clothing =
2. Education =
3. Food =
4. Health =
5. Sanitation =
6. Shelter =
7. Sports and Recreation =
8. Transportation =
9. Energy =
10. Arts and Aesthetics =

13. 10
What is It
What is Organic Chemistry?
Organic chemistry is one of the branches of chemistry. It deals with the study of
carbon containing compounds and their properties. It is the study of molecules containing the
carbon-hydrogen (C-H) bond and their structures, properties and reactions. It does not only
include hydrocarbons but also compounds with any number of other elements, including
hydrogen, nitrogen, oxygen, halogens, phosphorus, silicon, and sulfur. This branch of
chemistry was originally limited to compounds produced by living organisms but has been
broadened to include human-made substances such as plastics. The range of application of
organic compounds is enormous and also includes, but is not limited to, pharmaceuticals,
petrochemicals, food, explosives, paints, and cosmetics.
The word “organic” was originally used by 18th
century chemists to describe
substances obtained from living sources - plants and animals. These chemists believed that
nature possessed a certain “vital force” and that only living things could produce carbon
compounds. This Romantic notion was disproved by Friedrich Wohler, a German chemist
who prepared urea, an organic compound, from the reaction of between the inorganic
compounds lead cyanate and the aqueous ammonia:
Pb(NOC)2 + 2NH3 + 2H2O → 2(NH2)2CO + Pb(OH)2
Urea
Importance of Organic Chemistry
Organic chemistry is important because it is the study of life and all the chemical
reactions related to life. Several careers apply an understanding of organic chemistry, such as
doctors, veterinarians, dentists, pharmacologists, chemical engineers, and chemists. Organic
chemistry plays a part in the development of common household chemicals, foods, plastics,
drugs, fuels... really most of the chemicals part of daily life.
Organic chemistry has great contributions in the different areas of human needs like
food, shelter, education, energy, transportation, sports and recreation and arts and aesthetics.
The importance of Organic Chemistry is seen in the following
1. Medicine: Medicine is the main application of organic compounds. Organic Chemistry is
necessary in the production of drugs, in the study of diseases and to diagnosis diseases.
2. Food: Food materials are entirely composed of carbon compounds viz.
carbohydrates (CHO), proteins (NH2-CH-COOH), and fats (CH-COO-CH). Even vitamins
are organic in nature.
3. Textiles and clothing: Cloth is made of cotton, wool, silk, polyester, etc. All these
materials are organic. This chemistry helps in the study of textiles material, their
improvement for durability, color, and cleaning process.
.

14. 11
4. Sanitation: In industries and labs, organic solvents are widely used for cleaning. at home
and other places of living, we use phenols and other agents to clean the floor and walls. These
sanitizing agents work on the principle of organic chemistry to remove the dirt and also kill
the microbes.
5. Sterilization: Most of the sterilizing agents and disinfectants like phenol, formaldehyde,
etc. are carbon compounds. Due to their properties like solubility, pH they can kill microbes
and even human body cells.
6. Chemical Analysis: Chemical substances like drugs, pesticides, cosmetics, are tested as a
part of quality control.
7. Valuables: Diamonds, graphite, petroleum. Interestingly the carbon compounds are found
to be highly valuable, durable, and hardest in the world. Their properties are studies in
organicchemistry.
8. Chemical synthesis: Organic chemistry helps us synthesize many compounds that are
needed on a large scale.
9. Identification of Compounds: This is another area where the importance of organic
chemistry plays a major role. Most substances either extracted from plants, animals are
identified by the use of specific tests. These tests employ organic compounds and related
techniques. For an idea see the tests for carbohydrates.
10. For better molecules: If a molecule is already used for a long time. It can be replaced by
similar molecules with a slight change in its chemistry. This change is aimed at more
effective performance. This is possible by substituting some organic functional groups.
Thus, the importance of organic chemistry is immense in human life
What’s New
The history of organic chemistry can be traced back to ancient times when medicine
men extracted chemicals from plants and animals to treat members of their tribes.
Organic chemistry was first defined as a branch of modern science in the early 1800's
when one of the leading scientists of his generation Jöns Jacob Berzelius coined the term
“organic chemistry” for the study of compounds derived from natural sources in 1807.
The development of the organic chemistry can be credited to contributions of several
scientists in the field.
Let’s familiarize with these scientists and their contributions by doing the next
activity.

15. 12
Hermann Emil
Louis Fischer
Jöns Jacob
Berzelius
Friedrich August
Kekulé
Friedrich Wöhler
Justus von Liebig Jean Baptiste Biot William Henry Perkin
Louis Pasteur
Activity 2. Organic Chemistry Milestone
Objective: At the end of the activity, you should be to recognize the contributions scientists
in the development of organic chemistry.
Material: paper and pen
Procedure:
A Direction: Using references, identify the name of the scientists given their contributions in
organic chemistry. Refer to the scientists below.
1. He first synthesized salicylic acid. (1853)
2. He developed synthetic method of producing indigo from petrochemicals (1867)
3. He discovered urea, the first natural organic compound to be synthesized in the
laboratory. (1828)
4. He discovered the structure of benzene (1865)
5. He introduced the term, Organic Chemistry to describe the study of compounds
isolated from nature ( 1807)
6. He discovered the existence of molecular asymmetry, the foundation of
stereochemistry (1848)
7. He observed polarization with several organic liquids, including oil of
turpentine.(1815)
8. He devised a method of distilling paraffin from coal and oil shale. (1848)
9. He developed new methods for the quick and precise measurement of the
quantities of carbon, hydrogen, and nitrogen in organic compounds. (1840)
10. He discovered the first synthetic organic dye, mauveine, made from aniline.
(1856)
11. He studied soaps made from fats and alkalis. (1826)
12. He discovered the esterification of carboxylic acid. (1895)

16. 13
Adolf von Baeyer James Young Michel Chevreul
Hermann Kolbe
What is It
Table 1 summarizes the contributions of different scientist in the development of organic
chemistry.
Table 1. TIMELINE IN THE DEVELOPMENT OF ORGANIC CHEMISTRY
Year
Name of
Scientist/s Country Contributions
8000 BC Possibly the first "controlled" organic reaction was the
production of ethanol using fermentation
340 BC Aristotle Greece The concept of vitalism has been derived from the
philosophy of Aristotle.
1250 Taddeo Alderotti Italy An alchemist who is given credit for the development
of fractional distillation.
1540 Valerius Cordus Germany The student of Paracelsus who synthesized diethyl
ether by the action of sulfuric acid on ethanol.
1746 John Roebuck England Sulfuric acid is used to catalyze many organic
reactions as noted with the synthesis of diethyl ether
from ethanol. .
1770 Torbern O.
Bergman
Sweden He was the first to distinguish between organic and
inorganic chemistry with organic being associated with
chemicals derived from living things and containing a
"property" called vitalism.
1806 N-L. Vauquelin,
P-J. Robiquet
France Vauquelin and his student Robiquet isolated the first
known amino acid
1826 Michel Chevreul Sttudied soaps made from fats and alkalis
1828 Friedrich Wöhler Germany By synthesizing urea from the "inorganic" ammonium
cyanate.
1820's Jons Jacob
Berzelius
Sweden He coined the terms isomerism, catalyst & protein
and reportedly noticed that lactic acid has two optical
isomers.
1849 Louis Pasteur France He made a very significant contribution to organic

17. 14
chemistry when he extentded Biot's work and achieved
the first resolution of a racemic mixture of tartaric
acid and laid the foundation of what we now call
stereochemistry.
1856 William
Henry Perkin
England Perkin, when attempting to synthesize quinine,
serendipitously synthesized mauveine and had a
successful career in dye synthesis.
1862 Emil Erlenmeyer Germany He performed many original syntheses, developed the
Erlenmeyer rule and very importantly was the first to
suggest the possibility of double and triple
bonds between two carbons.
1865 August Kekulé Germany He was one of the first to draw structures of organic
compounds using lines for bonds and is most famous
for his proposed Kekulé structure of benzene.
1869 John Wesley Hyatt The origin of polymer science has been attributed to
many different people. John Wesley Hyatt has been
given credit for preparing the first synthetic polymer.
1874 J. H. van 't
Hoff, Joseph A. Le
Bel
Netherlan
ds, France
He developed the concept of the arrangement of
atoms in space (3d molecules) including the
tetrahedral arrangement of atoms bonded to a
tetravalent carbon & the relationship to optical activity.
1883 Adolf von Baeyer Germany He synthesized and determined the structure of
indigo and other dyes.
1891 Vladimir
Grigoryevich
Shukhov
Russia Shukov devleoped thermal cracking. Cracking serves
as the method for providing feedstock for the synthesis
of many organic chemicals.
1892 Emil Fischer Germany Fischer elucidated the structures of sugars and
developed the Fischer projection system for
tetrahedral carbons,
1900 Adolf von Bayer Germany Bayer manufactured acetylsalicylic acid ( aspirin)
1903 William Coblentz U.S. He discovered infrared spectroscopy
1916 Gilbert Lewis U.S. Lewis developed the concepts of electron pairs,
bonding, Lewis structures and Lewis
acids (1923) for atoms and molecules. He, expanded
work on the valence concepts of Richard Abegg.
1922 Francis Aston England He n invented the mass spectrometer, an extremely
powerful method for determining the structure and
identification of organic compounds
1929 Kathleen Lonsdale Ireland He proved using x-ray chrystallography that benzene
is flat and all bonds are the same length
1930,
1934
Wallace Carothers U.S. They discovered nylon and the useful synthetic
techniques for producing these polymers.
1937 Eugene Houdry Houdry developed catalytic cracking
1940 -
1979
Robert Wood ward US Woodward and his research group synthesized many
natural products including quinine cholesterol,
cortisone, strychnine, lysergic acid, reserpine,
chlorophyll, cephalosporin/colchicine and Vitamin B12
1985 Harold Kroto,
R. Smalley, Robert
Curl
U.S.,
England,
U.S
They discovered methods for synthesizing and
characterizing Buckminster fullerene which lead to
the discovery of nanotubes and graphene.

18. 15
1. Nylon thread
2. sodium benzoate in
3. fats in soap
4. carbon fiber wiper blade 5. carbon fiber ball
What’s More
You have learned in this module the importance and history of organic chemistry
To further understand the nature and scope of organic chemistry, kindly do the
following activities.
Activity 3. Organic Chemistry and its Organic Chemicals
Objective: At the end of the activity, you should be able to identify the importance of
organic chemistry and the application of some organic compounds.
Material: paper and pen
Procedure:
A. Identify what areas of human needs the following organic chemicals belong.
6. dye ink
7. butane gas 8. carbon fiber roofing
B. Unscramble the letters to reveal the correct name of the organic chemicals given their
uses.

19. 16
1806
Vauquelin and his
student Robiquet
isolated the first
known
1828
_ synthesized
urea from the
"inorganic"
ammonium cyanate
1849
_ laid the
foundation of
stereochemistry.
1937
Catalytic
cracking was
developed by
.
1930
Wallace Carothers
discovered and the
useful synthetic
techniques for producing
these polymers
1929
Kathleen Lonsdale
proved using x-ray
that benzene
is flat and all bonds are
the same length
COTAEN 1. Fuel for vehicles
TABUNE 2. Fuel in lighters
LOPYVILNY CLODHRIE 3. Material for garden hose
PIASINR 4. Medicine for headache
RICCIT IDAC 5. Vitamin C food supplement
ETACYLEEN 6. Used in welding torch
HAMETNE 7. Fuel in biogas
MAFORLIN 8. Preservative for biological specimen
ONEACET 9. Nail polish remover
HYETL OLACOLH 10. Disinfectant/ cleansing agent
Activity 4. Tracing the History of Organic Chemistry
Objective: At the end of the activity, you should be able to trace the development of the
history of organic chemistry.
Material: Paper and pencil
Procedure: Trace the history of Organic Chemistry by completing the diagrams.
1891
developed
thermal cracking for
for the synthesis of
many organic
chemicals
1883
Adolf von Baeyer
determined the
structure of and
other dyes.
1922
Francis Aston invented
the , an extremely
powerful method for
determining the structure
and identification of
organic compounds
1862
first to suggest the
possibility of double and
triple bonds between two
carbons.
1865
August Kekulé
discovered the
famous structure
of
1869
has been
given credit for
preparing the first
synthetic polymer

20. 17
Scientist and
contribution
year
What I have learned
Direction: Summarize the lessons that we studied in this module by answering the
following question.
1. What is Organic Chemistry?
2. Why do we need to study Organic Chemistry?
3. What is the importance of Organic chemistry to our daily life?
4. When does organic chemistry started?
5. Enumerate five scientists and their contributions to organic chemistry.
What I Can Do
Direction. Create a timeline of at least 10 events in the history of organic chemistry using the
graphic organizer below.

21. 18
Assessment
Direction: Read the following questions carefully and write only the letter of the correct
answer on a separate sheet of paper.
1. What is Organic Chemistry?
A. It is the study of the structure, properties, composition, reactions, and preparation of
carbon-containing compounds.
B. It is the branch of chemistry which deals with the study of properties, composition
structure and changes of matter
C. It is the science of obtaining, processing, and communicating information about the
composition and structure of organic matter.
D. It is branch of science concerned with the chemical and physicochemical processes
and substances that occur within living organisms
2. All of the following can combine with carbon to form an organic compound EXCEPT
A. hydrogen
B. oxygen
C. nitrogen
D. copper
3. Which of the following is TRUE about organic chemistry?
A. Several careers need understanding of the application of organic chemistry like
engineering and astronomy
B. Organic chemistry is the study of life and all chemical reactions are related to life.
C. Organic chemistry is necessary in the field of electronics and communication.
D. Organic chemistry helps to solve problems involving air pollution and solid
wastes.
4. Which of the following natural organic materials is very useful in clothing?
A. Kevlar
B. Nylon
C. Cotton
D. Polyester
.
5. Which scientist – discovery pair is CORRECT?
A. Kekule - soap
B. Carothers - nylon
C. Bayer - benzene
D. Pasteur - salicylic acid

22. 19
6. There are over five million organic compounds known today and an almost infinite
number of new compounds could possibly be synthesized. This can be compared to the
total number of inorganic compounds, which is approximately half a million. What do you
think will happen if these organic chemicals are produced continually in quantities?
A. Most of these chemicals naturally decomposed in the environment.
B. These organic products can cause pollution if they are improperly disposed.
C. Man’s life becomes comfortable because of the vast increase of organic products.
D. There are varieties of commercial products that are always available in the market.
7. Organic Chemistry was originally limited to study of compounds which are .
A. existing naturally
B. man-made products
C. produced by living organisms
D. synthetic and natural products
8. Friedrich Wohler is known as the father of modern organic chemistry. What is his
greatest contribution to chemistry?
A. He introduced the process of making soap and detergent.
B. He developed the concept of tetravalent structure of carbon
C. He developed synthetic method of producing indigo from petrochemicals
D. He prepared organic compound, urea, from the reaction of lead cyanate and
aqueous ammonia.
9. Who introduced the term, Organic Chemistry to describe the study of compounds isolated
from nature?
A. William Henry Perkin
B. Jöns Jacob Berzelius
C. Friedrich August Kekulé
D. Hermann Emil Louis
10. All of the following found in food are organic compounds EXCEPT:
A. fats
B. proteins
C. minerals
D. carbohydrates
For item 11, refer to the information below.
I. Friedrich August Kekulé proposed the structure of benzene
II. Vauquelin and his student Robiquet isolated the first known amino acid.
III. William Perkin discovered the first synthetic organic dye, mauveine, made from
aniline.
IV. Jons Jacob Berzelius introduced the term, Organic Chemistry to describe the study
of compounds isolated from nature
11. Which of the following is the correct chronological order of the development of the
history of organic chemistry?
A. I → II → III → IV
B. I → II → IV → III
C. II → IV → III → I
D. II → I → III → IV

23. 20
12. Which organic compound produced from the reaction between the inorganic compounds
lead cyanate and the aqueous ammonia?
A. Urea
B. Silica
C. Cyanide
D. Carbides
13. Which organic compound – use is NOT correctly paired?
A. Acetone – nail polish remover
B. Methane – fuel in biogas
C. Alcohol – disinfectant
D. Aspirin – medicine for diarrhea
14. Which areas of human needs does octane useful?
A. Food
B. Shelter
C. Clothing
D. Transportation
15. All of the following are importance of organic chemistry in our lives EXCEPT
A. All of the chemical reactions in organic chemistry are related to life
B. Several careers apply an understanding of organic chemistry
C. It deals with few chemical compounds found in the environment.
D. It plays a part in the development of common household chemicals, foods, etc.
Additional Activities
Write a short essay about the importance of organic chemistry. The title will
be”Organic Chemistry in my Daily Life.”

24. 21
References
Brown, Theodore L, et. al. CHEMISTRY, The Central Science. USA: Prentice Hall
Publishing Inc. 2012
Bruice, Paula Y. Organic Chemistry, USA: The McGraw-Hill Companies, Inc. 2000.
Carey, Francis A. Organic Chemistry, 4th
edition, USA. The McGraw-Hill Companies, Inc.
2000
Chang, Raymond CHEMISTRY, New York: MCGraw Hill Companies, Inc. 2007
Hoffman, Robert V. Organic Chemistry an Intermediate Text, Canada.John Wiley & Sons,
Inc., Hoboken, New Jersey. 2004
Magno, Marcelita C, et, al CHEMISTRY, Science and Technology Textbook for Third Year,
Quezon City: Vibal Publishing House Inc.
Mendoza, Estrella E, Religioso, Teresita F. You and the Natural World Series, Science and
Technology, CHEMISTRY. Quezon City: Phoenix Publishing House, Inc. 2000
Rabago, Lilia M. , Mapa, Amelia, Fedilino, Trinidad, CHEMISTRY, Textbook in Science
and Technology III, Quezon City: SD Publications , Inc,

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