A Science Intervention Material (SIM) for Gr. 9
Quarter 2
When the bond begins…
The covalent and ionic bond saga
Least Mastered Competency:
The Learners should be able to explain the formation
of ionic and covalent bonds.
Code: S9MT-IIa-13
Author: LUCKY G. LAGURA
Science Teacher II
School: TORIBIO MINOR NATIONAL HIGH SCHOOL
Table of Contents
Page
Objectives…………………………..
3
Guide card………………………….
3
Activity card……………………….
4-7
Assessment card…………………
8-9
Enrichment card………………...
10
Reference card…………………… 12-13
Answer Key……………………….. 15-17
GUIDE CARD
Hi! I am Dr. Atom. I will be with you in
this quest for knowledge about
chemical bonding.
Did you know that chemical bonds are
what joins atoms together. When two
or more atoms are in a chemical bond
they stay together unless the needed
amount of energy, or more, is
transferred to the bond. Something
different can then happen.
You will gain more information
about chemical bonding that
involves gaining and losing
electrons as you join me in this
exploration. You will surely learn
from the adventurous surprises.
At the end of this journey, you are
expected to:
a. form bonds using Lewis dot
structure;
b. illustrate how ionic and covalent
bonds are formed
Since bonding involves the
element’s valence electrons, Lewis
symbols are used. Lewis symbols
consist of the element plus a dot for
each valence electron.
Example:
Lets get started!
DOTS INTERESTING!
Write the Lewis Symbol of the given elements.
1. Na and Cl
2. Li and F
3. K and O
If you are to rate this
activity, how many
lightning bolts will you
give it? Kindly shade
your rating.
Difficult
Average
Easy
Write your answer here…
Aim the dot
With the use of an arrow, show
the complete transfer of electron/s
and indicate the formation of ions.
If you are to rate this
activity, how many
lightning bolts will you
give it? Kindly shade
your rating.
Difficult
Average
Easy
Sharing electrons
between two or more
atoms makes a very
strong bond called a
covalent
bond.
Sometimes
electrons
are shared equally, and
are called a non- polar
bond.
Lets get started!
1. Label the atoms before and after bonding.
If you are to rate
this activity, how
many lightning
bolts will you
give it? Kindly
shade your
rating.
Difficult
Average
2. Write the name of each atom below, and
Easy
then draw how they might share their
electrons.
Write your answer here…
Hey
are
you still with
me?
If you are,
then I will give
you
more
information
about the types
covalent
bonding.
Complete me!
If you are to rate this
activity, how many
lightning bolts will you give
it? Kindly shade your
rating.
Complete the table below by writing
Difficult
the Lewis structure and by identifying each
Average
of the following compounds as either a
Easy
polar molecule or a nonpolar molecule.
Lewis
Compound
Type of Bond
Structure
1. Ammonia (NH3)
2. Dichloromethane
(CH2Cl2)
3. Phosphorus
Pentachloride (PCl5)
4. Water (H2O)
5. Chlorine gas (Cl2)
Fantastic! You have reached this far.
Take a deep breath and relax for a while. By
now you are already filled with knowledge
about CHEMICAL BONDING. Keep on having
fun as you learn! You are now ready to step up
a notch!
Its time to wear your thinking cap!
The IONIC CHALLENGE…
MULTIPLE CHOICE. Choose the letter of the best answer and write it
on the space provided before each item.
_______1. Choose two elements that would likely form an ionic bond
among the following elements: Li, Si, F, Ne
a.Li and Si
c. Ne and Si
b.Li and F
d. Si and F
_______2. This refers to a chemical bond in which one atom loses an
electron to form a positive ion and the other atom gains an electron to
form a negative ion is a (an)
a. Cation
c. Double bond
b. Covalent bond
d. Ionic bond
_______3. A negatively charged ion
a. A cation
c. An anion
b. A covalent bond
d. An ionic bond
_______4. This refers to Electron-dot diagrams or Electron-dot
structures
a. An ion
c. Electronegativity
b. An anion
d. Lewis Dot Structure
_______5. Bonding occurs because of the attractions of
a. Electrons
b. Neutrons
b. Ions
d. Protons
Fantastic! You have reached this far.
Take a deep breath and relax for a while. By
now you are already filled with knowledge
about CHEMICAL BONDING. Keep on having
fun as you learn! You are now ready to step up
a notch!
Its time to wear your thinking cap!
The COVALENT CHALLENGE…
MULTIPLE CHOICE. Choose the letter of the best answer and write it
on the space provided before each item.
_______1. What type of chemical bond involves sharing a pair of
electrons between atoms in a molecule?
a. A cation
c. An ion
b. A covalent bond
d. An ionic bond
_______2. When does covalent bonding takes place?
a. It takes place when atoms share electrons with one another.
b. It takes place when the attraction between atoms is strong.
c. it takes place when atoms collide with one another.
d. it takes place when atoms attain stability
_______3. In a covalent bond, electrons are____.
a.Gained
c. Lost
b.Lost or gained
d. Shared
_______4. Which of the following contains a covalent bond?
a. Li2O
c. NO3
b. Mg3N2
d. NaCl
_______5. What kind of chemical bond will form between two oxygen
atoms?
a.Ionic bond
c. Nonpolar covalent bond
b.Metallic bond
d. Polar covalent bond
Way to go! If you reach this part, it
means that you are already equipped
with vital information about chemical
bonding. Keep it up!
Bonding Pictures
Draw Lewis dot diagrams for the following compounds.
1. Carbon
dioxide (CO2)
2. Potassium
iodide (KI)
3.Nitrogen
molecule (N2)
4. Methane
(CH4)
5.Calcium
iodide (CaI2)
Its not a sad goodbye, but its time for
our bond to end…
How do you feel about this SIM? Can
you share it to me?
1.
At
first,
I
didn’t
know
how
to
_______________________________________________________
____________________________________, but now it really
makes sense!
2.
I
haven’t
figured
out
__________________________________________________________
____________________________yet,
so
I
will
ask
_________________________for help.
3.
With
practice,
I
will
be
able
to
___________________________________________________________
___________________________________________________________
__________________________________________________________.
If you are to rate this SIM, how many
lightning bolts will you give it? Kindly
shade your rating.
Difficult
Average
Easy
HEY..YOU HAVE DONE
SO GREAT. Since learning is
an unending journey…For
further reading, you may
visit the list of references
below.
Website references for further reading:
1. Chemical bond Facts for Kids. Kiddle Encyclopedia.
Retrieved from https://kids.kiddle.co/Chemical_bond,
July 4, 2019
2. Types of chemical bonding. Retrieved from
https://chem.libretexts.org/Bookshelves/Physical_an
d_Theoretical_Chemistry_Textbook_Maps/Supplem
ental_Modules_(Physical_and_Theoretical_Chemistr
y)/Chemical_Bonding/Fundamentals_of_Chemical_
Bonding/Covalent_Bonds July 4, 2019
3. https://www.slideshare.net/JeanneMacabunga2/strat
egic-intervention-material-in-science-9-io-nic-bond
Book:
1. Science 9 Learner’s
2014/pages 111-126
Module.
First
edition,
References for image or pictures used:
1.
Chemical
bond
teacher.
Digital
image.
Retrieved
from
https://www.kisspng.com/png-chemistry-chemical-bond-teacher-ionicbonding-clip-179630/download-png.html July 4, 2019
2. Science
boarder.
Digital
image.
Retrieved
from
https://www.pageborders.net/click2.php July 4, 2019
3. Atom. Digital Image. Retrieved from http://pluspng.com/png167354.html July 4, 2019
4. Intelligent clipart. art. Smart student. Retrieved from https://yawebdesign.com/explore/intelligent-clipart-global-development/July
5,
2019
5. Old
Scroll.
Digital
Image.
Retrieved
from
https://gallery.yopriceville.com/Free-Clipart-Pictures/ScrollsPNG/Old_Scroll_Paper_PNG_Clipart_Image. July 4, 2019
6. Scientist
Clipart.
Digital
Image.
Retrieved
from
https://www.pinclipart.com/downpngs/Jihm_girls-clipart-lawyerscientist-clipart-png-transparent-png/. July 4, 2019
7. Ionic
Bond.
Digital
Image.
Retrieved
from
https://www.pinterest.ph/pin/325314773079687168/
8. Thinking
cap.
Digital
Image.
Retrieved
from
https://educatorclips.com/thinking_cap.html. July 4, 2019
9. Did
you
know.
Digital
Image.
https://www.gawler.sa.gov.au/community/news/did-you-know-nawmafact-4. July 8, 2019
10. Target
arrow.
Digital
Image.
Retrieved
from
https://www.hardmoneyfirst.com/wpcontent/uploads/2016/01/bullseye.png
11. Very
Good
Smiley.
Digital
Image.
https://i.pinimg.com/originals/ea/3d/cf/ea3dcff8ed8e8939d98c96b81f74
7623.png
12. Chemistry Professional Background. Digital Image. Retrieved from
http://www.seekgif.com/free-image/chemistry-professional-6.html
13. Scientist clipart. Digital Image. Retrieved from https://encryptedtbn0.gstatic.com/images?q=tbn:ANd9GcQHFBFCLKE5eA_21qhIEXcB
UuG0NuMbnmm48Wf64XHmVpWnAFWCTw
14. Sticky
notes
png.
Digital
Image.
Retrieved
from
https://www.kisspng.com/png-paper-post-it-note-sticky-notes-colorsticky-notes-132331/
Let us see how you did in the
different activities. Record and graph
your scores below.
Activity
card
Highest
Possible
Score
1 “Dots
Interesting”
3
2 “ Aim the
dot”
3
3
7
4 “Complete
me”
10
Assessment
Card
Highest
Possible
Score
1 “The Ionic
challenge”
5
2 “ The
Covalent
Challenge”
5
Enrichment
Card
Highest
Possible
Score
Bonding Pictures
5
Score
Shade the box
that corresponds to your
score per activity card.
1
Score
2
3
4
Shade the box
that corresponds to your
score per assessment
card.
1
2
Score
Shade the box
that corresponds to your
score in the enrichment
card.
1
Time to check your work!
DOTS INTERESTING!
1. Na
and
Cl
2. Li
and
F
3. K
and O
HH
H2
Hydrogen
Hydrogen
Aim the dot
Oxygen
H O
H
Time to check your work!
Complete me!
Compound
1. Ammonia (NH3)
2. Dichloromethane
(CH2Cl2)
Lewis
Structure
H
N
H
Type of Bond
H
Polar Bond
Polar Bond
3. Phosphorus
Pentachloride (PCl5)
Nonpolar Bond
4. Water (H2O)
5. Chlorine gas (Cl2)
The IONIC CHALLENGE…
1. B
2. D
3. C
4. D
5. A
Polar Bond
Cl Cl
Nonpolar Bond
The COVALENT CHALLENGE…
1. B
2. A
3. D
4. C
5. C
Time to check your work!
Bonding Pictures
Draw Lewis dot diagrams for the
following compounds.
1. Carbon
dioxide (CO2)
2. Potassium
iodide (KI)
K
I
3.Nitrogen
molecule (N2)
N N
4. Methane
(CH4)
H
H C H
H
5.Calcium
iodide (CaI2)
I Ca I
Name: LUCKY G. LAGURA
Birthdate:
DECEMBER 19, 1988
School Graduated:
ATENEO DE ZAMBOANGA UNIVERSITY
Educational Attainment:
BSED BIOLOGICAL SCIENCES
School Assignment:
TORIBIO MINOR NATIONAL HIGH SCHOOL