Republic of the Philippines

Department of Education Regional Office IX, Zamboanga Peninsula

Science Grade 9 Quarter 2 - Module 6

The General Classes of Organic Compounds

Zest for Progress

Zeal of Partnership

Name of Learner: ___________________________

Grade & Section: ___________________________

Name of School: ___________________________

9

1

What I Need to Know

This module was designed and written with you in mind. It is here to help you

master the nature of Organic Compounds. Most of the foodstuffs that we consume

every day such as sugar, fats, starch, vinegar, etc. are basically organic compounds.

Even though the organic compounds have been known to man since prehistoric

times, their study practically began from the eighteenth century! The term “organic

compound” was coined by Berzelius in 1807.

Organic chemistry is the study of carbon compounds, which extends to

understanding chemical reactions in living organisms and products derived from

them. There are numerous examples of organic chemistry in everyday life. Organic

chemistry plays an important part in our daily life because food, clothes, paper, ink,

rubber, soap, perfumes, medicines etc. are indispensable to us for proper living.

Let’s explore more about these compounds.

This module contains the following topics:

Lesson 1 – General classes and uses of organic compound

After going through this module, you are expected to: 1. Recognize the general classes and uses of organic compounds

(S9MT- IIh -18)

Organic compounds are group of compounds that contain the element carbon.

Organic compounds contain carbon and hydrogen combined with other elements

namely oxygen, nitrogen, phosphorous, sulfur, and halogens (fluorine, chlorine,

bromine, and iodine) ethyl alcohol, acetone, gasoline, naphthalene, acetic acid,

vanillin, acetylene, and esters are just a few examples of many useful organic

compounds. These kinds of compounds are produced by plants and animals.

However, these carbon-containing compounds can also be produced artificially.

There are also organic compounds that are produced from petroleum: liquefied

petroleum gas (LPG), gasoline, lubricating oil, and kerosene. These compounds have

different uses in the community.

What’s In

Activity 1. Decode Me!

Directions: This activity will help you reinforce your chemistry vocabulary

words at the same time recall what you have learned in the previous lesson.

Collect the letters that are numbered to decode the mystery word. Choose the

words of the correct answer from the box below.

Module

6

The General Classes of Organic Compounds

Score___ /7

2

__ __ __ __ __ __ __ __ 1. These are organic compounds that

contain a hydroxyl group-OH.

__ __ __ __ __ __ 2. An element having four valence electron.

__ __ __ __ __ __ 3. The type of bond formed between the carbon atoms of alkanes.

__ __ __ __ __ __ __ __ __ 4. Also referred as the ethyne.

__ __ __ __ __ __ __ __ __ __ __ __ 5. A specific group of compounds which contain carbon and hydrogen only.

__ __ __ __ __ __ 6. The type of bond formed between carbon atoms of alkynes.

__ __ __ __ __ __ __ __ 7. Compounds like acetone and

formaldehyde having a carbonyl functional

group.

Directions: What’s the mystery word? Decode the mystery word by writing the

letters found in each number then define the decoded word.

______ ______ ______ ______ ______ ______ ______

1 2 3 4 5 6 7

Define the decoded word in your own words:

__________________________________________________________________________

Try out the next activity to learn more about the decoded word. Have fun!

What’s New

Organic Chemistry is a study of carbon containing compounds, usually

bonded to Hydrogen, Oxygen and sometimes Nitrogen. There are many types of

organic molecules. Hydrocarbons are examples of some of the simpler organic

compounds since they only contain carbon and hydrogen.

In addition, there are four groups of organic compounds found in all living

things namely: Carbohydrates, Lipids, Proteins and nucleic acids.

Activity 2: Word Search

Objective: In this activity you will be able identify common organic compounds and some of its examples. Procedure: Find the given words either horizontal, vertical or in diagonal.

Acetone Alkane Lipids

Benzene Alcohol

Acetylene Butane Proteins

Ethyl Methane

B E N Z E N E O F O A

L O H O C L A A O L P

A E E T H Y L L E I S

C C N A O D O K N P N

E E A O T C L A A I I

B N B E T I P N H D E

D E A L M E Y E T S T

L T C T N B C D E A O

O A G O U A C A M P R

D C E E T B A N O O P

A C E T Y L E N E S A

Score___ /10

1

2

3

4

5

6

7

Hydrocarbons, Acetylene, Single, Carbon, Alcohols, Triple, Carbonyl

3

Guide Questions:

1. Give examples of organic compounds. (at least 3 for 5 pts. each)

Underline the correct answer from the box below.

2. What are the four groups of organic compounds found in living things? Underline the correct answer from the box below

You have just identified common organic compounds and some of the its

examples. Let’s explore more!

Activity 3. Name Me!

Directions: Identify the type of hydrocarbon molecules below based on the

number of bonds in the molecule. Answer in question # 1 is provided for you.

1. 2. 3.

Alkane _________________ _________________ In this activity, you have learned about the specific kinds of common organic

compounds that you usually see or use. In the succeeding activities you will be acquainted on the importance of these common organic compounds in dealing with the day to day activities in our lives.

Activity 4 – Organic Compounds: Are They Useful? Objective:

In this activity, you will be able to recognize the uses of common organic compounds.

Procedure: 1.Using the following pictures below answer the questions stated in the table.

ethyl alcohol, acetone, gasoline, naphthalene, acetic acid,

water,carbon dioxide

water,

Carbohydrates, proteins, lipids, nucleotides, water and carbon

dioxide

Score: ____ / 2

Figure 1 https://freesvg.org/1546205535

Figure 2 https://www.flickr.com/photos/pheezy/83658850

Figure 3 https://www.pxfuel.com/en/free-photo-juynx

Alkene, Alkane, Alkyne

4

1. Complete the table about the uses of the compounds. Using a check mark, indicate the uses of the compounds. You may have more than

one check mark per sample depending on its use/s.

Organic Compounds and Their use

(*This activity is adapted, with minor modification, from Glencoe Physical Science

Texas Edition. (1997). Glencoe/McGraw-Hill Companies Inc., page 369)

Guide Questions: (2 points each)

Q 1. What do you think are the characteristics of the materials given

above which give their uses?

___________________________________________________________________ Q 2. Why do you think these kinds of organic compounds are very

important?

__________________________________________________________________ You just learned the importance and uses of common organic

compounds that are commonly used. In the next activity, you will learn about

the other common organic compounds, alcohols and carbonyl group

containing compounds such as aldehydes and ketones.

Table 1: Organic Compounds

Gasoline Ethanol Acetone LPG Kerosene Acetic Acid

Uses Beverage

Food

Antiseptic

Fuel

Cleaner

Acetic Acid

Ethanol

Clue: pertains to the composition of the pictures shown above

Clue: Pertains to their uses in our activities of daily living

Score ___/ 10

Score ___ / 4

Figure 4 https://www.wallpaperflare.com/search?wallpaper

Figure 5 https://en.wikipedia.org/wiki/File:Norwegian-road-sign-610.2-LPG.jpg

Figure 6 https://live.staticflickr.com/8443/29001742005_c4f3106351_b.jpg

5

What is It

Many organic compounds are formed because of the special

characteristics of the element carbon. A carbon atom has four valence

electrons. This kind of atomic structure makes the carbon atom able to form

four covalent bonds with atoms of other elements and other carbon atoms.

Carbon atoms can also make many types of arrangements: single bonds

between carbon atoms and other elements can form different kinds of

compounds with short and long straight and branched chained structures

such as the following compounds; methane, Isopropyl Alcohol, and acetylene.

Properties of Common Organic Compounds

Every kind of organic compound has specific properties or characteristics. Although these compounds may show similarities in some

properties, these compounds do not have exactly the same properties: Gasoline, kerosene, diesel oil, vanillin, acetic acid, and ethyl alcohol are organic compounds with different properties. Gasoline, for example, has a

strong odor, is volatile, and highly flammable. Hydrocarbons

A molecule containing only carbon and hydrogen, bonded together by covalent bonds. Hydrocarbons differ from each other in two ways: number of carbon atom and the type of bonds between the carbon atoms (single, double,

triple bond). TABLE 2. Types of Hydrocarbons:

Type of Hydrocarbon Bond found in the molecule

Ending use to name the Hydrocarbon

Alkane All single bonds -ane ending

Alkene 1 double bond -ene ending

Alkyne 1 triple bond -yne ending

An organic compound is any member of a large class of gaseous, liquid, or

solid chemical compounds whose molecules contain carbon. Organic molecules are used by human in number of ways; it is used in industries like foods, pharmaceuticals, fuels etc. Alkanes consist of chemicals like propane, octane, and methane. These are used extensively as fuels for things like automobile gasoline and home heating/cooling fuel.

Alcohols include chemicals like ethanol and isopropanol. These are used as antiseptics and ethanol is a staple of the beverage industry (beer/wine). Finally, carboxylic acids include a wide variety of chemicals including pharmaceuticals. Aspirin, one of the oldest commercial drugs, contains a carboxylic acid.

6

What’s More

Activity 4: What is common between Acetone and Formalin Acetone and formalin are examples of simple carbonyl containing

compounds which have common uses. Carbonyl containing compounds are organic compounds that contain carbonyl functional group, which is

composed of a carbon atom double-bonded to an oxygen atom: C=O.

Objectives: Give the common uses of acetone, and formalin and

Relate the structures of acetone, and formalin to the carbonyl

compounds where they belong. Procedure:

1. With your parents or guardian at home talk about the uses of the simple

compounds you know. 2. What are the common uses of acetone and formalin?

With your parents or guardian at home,use the illustrations of the structures of acetone, and formaldehyde (formalin) below to answer the questions.

Guide Questions

1. What types of bonds do the common compounds have in their structures?

_____________________________________________________________________

2. Formalin and acetone are common carbonyl containing compounds. Why do you think they both belong in the group of carbonyl containing compounds?

__________________________________________________________________ In this activity you have recognize other different, important

organic compounds such as acetone and formaldehyde.

What I Have Learned

Activity 5: Pair Matching!

Objective: In this activity you will be able determined organic compounds and their uses.

Procedure: Match Column A (organic compound) to Column B (uses of

organic compound). Write only the letter of your choice before each

item.

Formaldehyde Acetone

Single, double or triple bonds

Clue: it has something to do with the structures

Score __ / 4

Score ___ /10

7

Column A Column B ____ 1.) Acetic acid A. used as LPG fuel

____ 2.) Acetamide B. used in making insecticides

____ 3.) Acetylene C. used for making local anesthesia

____ 4.) Butane D. used in making sauces and jelly

____ 5.) Formalin E. used in softening leather and cloth

____ 6.) Formaldehyde F. used in making medicine of throats and

in making chewable tablets

____ 7.) Benzoic Acid G. used in making medicines and the

Artificial perfumes

____ 8.) Ethyl alcohol H. used in making drugs as preservation of

Fruit juices

____ 9.) Ethyl acetate I. used for making wine and another

Alcoholic drinking

____ 10.) Ethyl bromine J. used in producing light and in making

Artificial ripening

You have just determined organic compounds and their uses. In the next

activity, you will learn about the other common organic compounds, alcohols and

carbonyl group containing compounds such as aldehydes and ketones.

What I Can Do Organic chemistry is the study of carbon compounds, which extends to

understanding chemical reactions in living organisms and products derived from them. There are numerous examples of organic chemistry in everyday life.

Calcium Carbide (CaC2) is a compound that is commonly known as kalburo. Fruit vendors use this substance to speed up ripening of fruits like mangoes and bananas in just a couple of days. When Calcium Carbide reacts with water such as moisture in the air, ethyne gas is produced. Ethyne or commonly known as acetylene is a kind of alkyne.

Activity 6: Which Bananas Will Ripen Faster

Objective:

Investigate how a common organic compound namely ethyne can ripen

fruits faster than than the natural way. Materials:

Calcium Carbide (kalburo) hand gloves Newspapers face masks

12 unripe, green bananas of same variety small plastic cups 2 empty shoe or fruit juice boxes packaging tape

8

Procedure:

1.) Using a sheet of newspaper, wrap ¼ kg (250g) of crushed calcium carbide (kalburo). Make sure that the wrapped calcium carbide will just be enough to fit the area of the bottom of one shoe box.

2.) Put the wrapped calcium carbide at the bottom of the shoe box and cover it with another piece of newspaper.

3.) Place five unripe (nearly maturity) bananas of the same kind inside the first box with calcium carbide. This will be group A.

4.) Do not put wrapped calcium carbide in the other shoe box.

5.) Place another set of five green, unripe bananas of the same kind in the second box. This will be group B.

6.) After putting all the bananas in box A and box B, cover both boxes.

7.) Leave the shoe boxes for 48 hours.

Guide Questions:

1. What are you going to find out or investigate in the experiment?

2. Write your hypothesis or prediction about what might happen in the experiment.

8.) After 2 or 3 days, put on your face masks and observe what happened

to the bananas. Write your observation in the data table below.

Table 4

Group Observations

Number of ripe bananas and their appearance

A ( with calcium carbide)

B Without calcium carbide)

Guide Questions:

CAUTION: Wear a face mask before performing the following procedure. Calcium

Carbide has a strong and irritating odor. Make sure that calcium carbide does not come in contact with water!

Clue: Cause and effect relationships between two variables in the

Experiment

Answer:_________________________________________________

Clue: Which shoe boxes with bananas ripen faster?

Answer:_________________________________________________

Score ___ / 10

9

3. How many bananas ripened in Group A? and in Group B? Underline the words below.

4. What conclusion can you make from the results of your experiment?

5. Look for the properties of ethyne and explain how it can introduce

ripening of fruits?

In this activity, you were able to observe how ethyne or acetylene, which

is an alkyne can make banana ripen faster. This is just one of the many

applications of acetylene.

To test your skill and knowledge learned, answer the assessment below.

Assessment

Multiple Choice: Choose the letter of the best answer. Encircle the letter of your

choice.

1. Honey is applying something to the ball bearings of the wheels of her bicycle so that friction will be minimized. Which of the following material do you think she is using? A. Vinegar C. kerosene B. Isopropyl alcohol D. lubricating oil

2. Which of the following pairs of organic compounds is highly flammable? A. Gasoline. Acetone C. lubricating oil, isopropyl alcohol B. Water ethyl alcohol D. liquefied petroleum gas, kerosene

3. Emmanuel, a fisherman went home with some of his catch. He told his son to cook the fish but his son said, “Father, the stove ran out of fuel.” He told him to buy some so they can start cooking. Which organic compound do you think the boy will buy? A. Kerosene C. lubricating oil B. Gasoline D. isopropyl alcohol

4. What is the maximum number of bonds a carbon atom can form? A. 2 C. 4 B. 3 D. 5

5. How do carbon atoms form many organic compounds? A. By attracting other elements toward, themselves to form the bonds B. By forming many bonds with other carbon atoms and other elements

Score ___ / 15

Options:1. Group A 4-5 bananas, Group B 0-2 bananas

2.Group A 12-15 bananas, Group B 10 13 bananas

Clue: who has more riper bananas Group A or group B

Answer:_________________________________________________

Facts: Calcium Carbide reacts with moisture in the air which will produced Acetylene gas

Acetylene gas imitates the action of natural ripening agent called ethene ethylene

Answer:_________________________________________________

10

C. By sharing their electrons with other metal and non-metal elements D. By transferring their electrons to the atoms of surrounding elements

6. Which of the following statements best describe organic compounds? A. organic compounds are compounds that contain carbon and oxygen only B. organic compounds are compounds that are produced by living things C. organic compounds are compounds composed mainly of carbon and

hydrogen only D. organic compounds are compounds that contain carbon atoms only

7. Salvador has to remove the red paint from the paintbrush so that he could still use it again the next time. What organic compound should he use? A. acetic acid C. kerosene B. lubricating oil D. formaldehyde

8. Which organic compound is used as a cleaning agent? A. Gasoline C. liquefied petroleum gas (LPG) B. Kerosene D. ethyl alcohol

9. Veronica wants to change her nail polish because it does not look good with her new dress. What must be use to remove her fingers’ old nail polish? A. Acetic acid C. acetone B. lubricating oil D. formaldehyde

10. Methane is a component of natural gas. What is the common use of methane? A. disinfectant C. fuel B. medicine D. cleaning agent

11. Which alkane will most likely have low boiling point? A. Propane C. butane B. Pentane D. hexane

12. Ethane is a natural gas produced in plants, which acts as a natural ripening agent of fruits. Which of the following organic compounds has the same ability to ripen fruits? A. Butane C. acetylene B. Propene D. pentane

13. What organic compound is used by embalmers in treating human cadavers? A. acetic acid C. methyl alcohol B. formaldehyde D. acetone

14. What is the common use of ethyne? A. disinfectant C. artificial ripening agent B. fertilizer D. antibiotic

15. Which are TRUE about the use of isopropyl alcohol? I. cleaner III. disinfectant II. fuel IV. Fertilizer

A. I and II only C. III and IV only B. II and III only D. I and IV only

Congratulations! You made it.

11

Additional Activity Alcohols are another group of organic compounds. These organic

compounds also have very important uses. Some alcohols are used as

antiseptic or disinfectant, some are used as cleaning agents, others are used

as components of liquors and a few alcohols are used as fuel for portable

stoves or other types of burners

Activity 7: Alcohols and Their Uses!

Objectives:

Recognize the uses of common alcohols

Identify similarities in the structures of different kinds of

alcohols; and

Relate these similarities to the common properties they have.

Procedure:

1) Read the labels of the products that contain alcohols.

2) Write in the table below, the names of the products and the alcohol compounds that are found in the labels of the product and their uses.

Name of the

products

Name of Alcohol/s

Present in the Product

Percent (%) or amount of

alcohol in the product

Uses

Guide Questions: 1. What are the common products that contain alcohol? Underline the words below.

2. Why are these alcohols important?

3. What types of bonds are present in ethyl alcohol, and isopropyl alcohol?

4.What accounts for the similar physical properties of alcohols?

In this activity you have learned the uses of common alcohols and the

relationship between the structures of alcohols and their physical properties.

Brand X alcohol, Rubbing alcohol, Denatured alcohol, Drinking alcohols

Clue: related to the use of alcohol in our daily activities.

Answer:_________________________________________________

Single bonds, double bonds, triple bonds

Answer:_________________________________________________

Clue: it has something to do with the structures of the compounds

Answer:_________________________________________________

Score __ / 8

12

Answer Key-Gr9Q2W6 Science

What I know

What’s New What’s New

1. B 2. C 3. C

4. C 5. C

6. C 7. B 8. C

9. C 10. C

11. B 12. C 13. A

14. D 15. D

Guides Questions:

1. Ethyl alcohol,Acetone,Gasoline, napthalene, acetic acid

2. Carbohydrates, proteins, lipids, nucleotides

What’s In 1. Alcohols 2. Carbon 3. Single 4. Acetylene 5. Hydrocarbons 6. Triple 7. Carbonyl

Mystery Word: ORGANIC Definition: Answers may vary Acceptable Answer: They are derived from plants and animals.

Table 1: Organic Compounds and Their Uses

Gasoline Ethyl

Alcohol

Acetone LPG Kerosene Acetic

Acid

Uses Beverage √

Food √

Antiseptic √ √

Fuel √ √ √ √

Cleaner √ √

13

Activity 3 Name Me Activity 4 Organic Compounds Are They Useful

1. Alkane

2. Alkene 3. Alkyne

1. Organic compounds are group

of Carbon-containing Compounds

2. Organic Compounds are very

important because they have many uses at home and in the industry

Activity 4 What is common between acetone and Formalin

Activity 5 Pair Matching

1. The structures of alcohol in this activity they only have

single bonds 2. Alcohol have the same

hydroxyl group as their

functional group that is why they have some similar

properties and characteristics

Activity 6 Which Bananas Will Ripen Faster

Assessment

1. “The effect of acetylene gas on the

rate of ripening of bananas” or “The

effect of using Calcium

carbide(kalburo) on the rate of ripening of bananas

2. The bananas in the shoe boxes with

calcium carbide will ripen faster

than the bananas in the shoe boxes

without Calcium Carbide

3. Group A 4-5 bananas, Group B 0-2 bananas

4. Group A bananas will ripen faster

5. Acetylene imitates the action of

natural ripening agent called ethene that is responsible of the ripening of

the bananas

Assessment

1. D 2. D 3. A 4. C 5. B 6. C 7. C 8. B 9. C 10. C 11. C 12. C 13. B 14. C 15. B

14

Activity 7 Alcohols and their Uses

Compounds Uses Compounds Uses

Gasoline

Kerosene

LPG (Liquefied Petroleum

Gas)

Fuel for vehicles

Fuel of lamps (gasera) and potable cooking

stove (kusinilya).

Can be used to remove paints.

Fuel for gas stove and cars

Ethanol

Acetone

Acetic Acid

Disinfectant, and used as

main ingredient in

liquors

Used to remove nail

polish

Used as component of vinegar

(4% by volume)

Can be used to treat fungal

infection

1. Brand X alcohol, rubbing

alcohol, denatured alcohol

2. Alcohol are very important because they can be use as

fuel, disinfectant, cleaning

agent, and ingredient sin

liquor.

3. The structures of acetone, and formaldehyde all have

single and double bonds.

4. The structures of acetone

and formaldehyde both

have carbonyl functional

group. These make them carbonyl containing

compounds.

What is it?

Guide Questions:

Q. 1 and Q. 2

Compounds Uses Compounds Uses

Gasoline

Kerosene

LPG (Liquefied Petroleum Gas)

Fuel for vehicles

Fuel of lamps (gasera) and

potable cooking stove (kusinilya). Can be used to remove paints.

Fuel for gas stove and cars

Ethanol

Acetone

Acetic Acid

Disinfectant, and used as

main ingredient in liquors

Used to remove

nail polish

Used as

component of vinegar (4% by

volume) Can be used to

treat fungal infection

Q. 3. These common organic compounds are very important

because they have many uses at home and in the industry

What I can do?

Q 1. And Q 2

Q. 3. The structures of the alcohols in this activity only have single bonds.

Q. 4. Alcohols have the same hydroxyl group as their functional group that is

why they have some similar properties or characteristics.

Assessment:

1. D 2. D 3. A 4. C 5. B 6. C 7. C 8. B 9. C 10. C 11. C 12. C 13. B 14. C 15. B

15

References Books:

Department of Education. (2013) Grade 9 learner’s module. Department of Education

Websites:

List of important Organic Compounds; Accessed August 12, 2020

https://www.jagranjosh.com/general-knowledge/list-of-important-organic-compounds-1456306311-1

Thought Co.; Examples of Organic Chemistry in Everyday Life; Accessed August 12, 2020

https://www.thoughtco.com/organic-chemistry-in-everyday-life-608694

Chemistry; Organic Compounds; Accessed August 13, 2020 https://byjus.com/chemistry/classification-organic-

compounds

Gasoline Retrieved August 20, 2020 from https://freesvg.org/1546205535

Acetone Retrieved August 20, 2020 from https://www.flickr.com/photos/pheezy/83658850

Acetic Retrieved Aug.20,2020 from https://www.wallpaperflare.com/search?wallpaper=acetic

LPG- Retrieved Aug. 20, 2020 fromhttps://en.wikipedia.org/wiki/File:Norwegian-road-sign-610.2-LPG.jpg

Acetic Retrieved August 20, 2020 from https://live.staticflickr.com/8443/29001742005_c4f3106351_b.jpg

Kerosene Retrieved August 20, 2020 from https://www.pxfuel.com/en/free-photo-juynx

Worksheet retrieved August 20, 2020 from

pichttp://cheminnerweb.ukzn.ac.za/Libraries/CHEM120R_WORK_SHEETS/Organic_Chemistry_Worksheets_1-

7.sflb.ashx worksheet 2

Organic compounds retrieved August 20, 2020 from https://en.wikipedia.org/wiki/Aliphatic_compound

Organic Compounds Retrieved August 20, 2020 fromhttps://www.toppr.com/guides/chemistry/organic-

chemistry/general-introduction-organic-compounds

Development Team Mi Ultimo Adios

Writer: Juvy F. Saren Editors: Margie Lou C. Jacob Laarni A. Adonis Kathleen Joy B. Padilla Joly C. Baradero Reviewer: Sandy R. Albarico Illustrator: Layout Artist: Management Team:

Majarani M. Jacinto, CESO VI SDS-ZDS

Visminda Q. Valde, Ed.D

ASDS

Raymond M. Salvador, Ed.D ASDS

Juliet A. Magallanes, Ed.D

CID Chief

Florencio R. Caballero, DTE EPS -LRMDS

Sandy R. Albarico

EPS - Science

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Mi Patria idolatrada, dolor de mis dolores,

Querida Filipinas, oye el postrer adios.

Ahi te dejo todo, mis padres, mis amores.

Voy donde no hay esclavos, verdugos ni opresores,

Donde la fé no mata, donde el que reyna es Dios.

Adios, padres y hermanos, trozos del alma mía,

Amigos de la infancia en el perdido hogar,

Dad gracias que descanso del fatigoso día;

Adios, dulce extrangera, mi amiga, mi alegria,

Adios, queridos séres morir es descansar.