STA. ROSA NATIONAL HIGH SCHOOLSTA. ROSA, LAPU-LAPU CITY

S.Y. 2015-2016

IONS AND CHARGES OF THE REPRESENTATIVE ELEMENTS

ASTRATEGIC INTERVENTION MATERIAL IN GRADE 9

CHEMISTRY

Presented by:

CELESTINA TANEO SAGARINOTEACHER III

TABLE OF CONTENTS

I. GUIDE CARD 1II. ACTIVITY CARDS

A. Activity card 1 2B. Activity card 2 4C. Activity card 3 5

III. ASSESSMENT CARD 6IV. ANSWER CARD 7V. ENRICHMENT CARD 8VI. REFERENCE CARD 9

GUIDE CARD

What are ions? How are they formed? When an atom gains or loses electrons, they develop a CHARGE. These charged particles are called IONS. When an atom loses electrons, they become positively charged. Positively charged ions are called CATIONS. When an atom gains electrons, they become negatively charged. Negatively charged ions are called ANIONS.

Welcome!!!!!

What ions are

you?????

CAN YOU MAKE A BLAST OUT OF THESE PHOTOS?????

In this STRATEGIC INTERVENTION MATERIAL ( SIM ) the students is exposed to an understanding of the concepts on the IONS AND CHARGES OF THE REPRESENTATIVE ELEMENTS. After accomplishing this SIM learner should be able to:

Identify the charged of a cation and anion with the location of these ions in the periodic table.

Determine the properties of a metal and non metal either by losing or gaining electrons.

Draw and create how ions are formed. Apply the concepts of ions in the field of pharmaceutical, environmental and

forensic ( crime-solving) fields or etc.

ACTIVITY CARD 1. LOCATE ME :Refer to the table below, Give at least two examples that should be placed in each column. 1 point each for the NAME sample of the ION corresponding its charged. You can use the periodic table as your guide.

Get ready Locate me plz…

Are you charged?

Table of charges based on groups on the periodic table without transition metals,

“d” block, and without noble gases, group VIIIA, to illustrate symmetry of the charges:

IA IIA IIIA IVA VA VIA VIIA+1 +2 +3 ±4 -3 -2 -1

The charge on an ion will involve a number and a sign. The number will always be the number of electrons involved, e.g., loss of two electrons is +2. The sign will be positive if electrons, are lost and negative if electrons are gained.

1.1 . Determine the charges on the following using the table above as a guide: THE FIRST ONE IS DONE FOR YOU….

1. An atom having lost two electrons_____Answer + 2

2. An atom having gained one electron ________

3. An atom having gained three electrons ______

4. An atom having gained two electrons _______

5. An atom having lost one electron ________

ADORNED ME???????

ACTIVITY CARD 2. LOSE ME OR ACCEPT ME????When an atom loses electrons, they become positively charged, and usually they are metals. When an atom gains electrons, they become negatively charged and usually they are non metals. Recall that electrons are negatively charged, so the gaining or losing of electrons will create a charge.

INSTRUCTIONS..PUT A CHECKMARK (√ )IN THE BOX FOR LOSING AND MARK (X) FOR GAINING ELECTRONS.

METALS/NON-METAL IONS LOSING ELECTRONS GAINING ELECTRONSLi+1

Mg+2

Ca+2

O−2

N−3

ACTIVITY CARD 3…… DRAW AND CREATE ME HOW ARE YOU FEELING NOW????? ARE YOU READY TO FORM IONS ON YOUR OWN????LETS TRY….. DRAW THEN CREATE ME. BUT WAIT,, THE FIRST ONE IS DONE FOR YOU.

CAN YOU DO IT NOW????? INSTRUCTIONS…..DRAW AND CREATE FOR SODIUM ION. (10 POINTS)

Take time to draw and create me???

III. ASSESSMENT CARD

INSTRUCTION..CHOOSE THE LETTER OF YOUR CHOICE…

1. What is the name of a positive ion?

Check your own understanding!!!

Na+¿¿

a. negative b.anions c. cations d.neutral

2. What is the name of a negative ion?

a. negative b.anions c. cations d.neutral

3. What is the only charge common to GROUP IA elements?

a. +1 b.+2 c.-1 d.-2

4. What is the only charge common to GROUP VIIA elements?

a. +1 b.+2 c.-1 d.-2

5. What is the charge of an atom that has lost 3 electrons?

a. positive b.+3 c. negative d.-3

Superb!!!!!!! Well done!!!!!

IV. ANSWER CARD

ACTIVITY CARD I…….. LOCATE ME …

ACTIVITY CARD 2……LOSE ME OR ACCEPT ME

METALS/NON-METAL IONS LOSING ELECTRONS GAINING ELECTRONSLi+1 √Mg+2 √Ca+2 √O−2 ×N−3 ×

1.1: 1. +2 2. -1 3. -3 4. -2 5. +1

ACTIVITY CARD 3….. DRAW AND CREATE ME

ASSESSMENT CARD: 1. C 2.B 3.A 4.C 5.B

V. ENRICHMENT CARDAtoms have no electric charge; if they acquire one, they are called ions. Ions are involved in a form of chemical bonding that produces extremely strong bonds between metals, or between a metal and a nonmetal. These substances, of which table salt is an example, are called ionic compounds. Ionization is the process whereby electrons are removed from an atom or molecule, as well as the process whereby an ionic substance, such as salt, is dissociated into its component ions in a solution such as water. There are several varieties of ionization, including field ionization, which almost everyone has experienced in the form of static electricity. Ion exchange, or the replacement of one ion by another, is used in applications such as water purification, while chemists and physicists use ions in mass spectrometry, to discover mass and

structural information concerning atoms and molecules. Another example of ions at work (and a particularly frightening example at that) is ionizing radiation, associated with the radioactive decay following a nuclear explosion.

Read more: http://www.scienceclarified.com/everyday/Real-Life-Chemistry-Vol-1/Ions-and-Ionization.tml#ixzz3oEL80MZa

MASS SPECTROMETRY.As not-ed, a number of the ionization methods described above are used in mass spectrometry, a means of obtaining structure and mass information concerning atoms or molecules. In mass spectrometry, ionized particles are accelerated in a curved path through an electromagnetic field. The field will tend to deflect lighter particles from the curve more easily than heavier ones. By the time the particles reach the detector, which measures the ratio between mass and charge, the ions will have been separated into groups according to their respective mass-to-charge ratios.When molecules are subjected to mass spectrometry, fragmentation occurs. Each molecule breaks apart in a characteristic fashion, and this makes it possible for a skilled observer to interpret the mass spectrum of the particles generated. Mass spectrometry is used to establish values for ionization energy, as well as to ascertain the mass of substances when that mass is not known. It can also be used to determine the chemical makeup of a substance. Mass spectrometry is applied by chemists, not only in pure research, but in applications within the environmental, pharmaceutical, and forensic (crime-solving) fields. Chemists for petroleum companies use it to analyze hydrocarbons, as do scientists working in areas that require flavor and fragrance analysis.

Read more: http://www.scienceclarified.com/everyday/Real-Life-Chemistry-Vol-1/Ions-and-Ionization-Real-life-applications.html#ixzz3oELgMQtx

VI.REFERENCE CARDhttp://www.scienceclarified.com/everyday/Real-Life-Chemistry-Vol-1/Ions-and-Ionization-Real-life-applications.html

"The Atom." Thinkquest (Web site). <http://library.thinkquest.org/17940/texts/atom/atom.html> (May 18, 2001).

"Explore the Atom" CERN—European Organization for Nuclear Research (Web site). <http://public.web.cern.ch/Public/SCIENCE/Welcome.html> (May 18, 2001).

Gallant, Roy A. The Ever-Changing Atom. New York: Benchmark Books, 1999.

"Ion Exchange Chromatography" (Web site). <http://ntri.tamuk.edu/fplc/ion.html> (June 1, 2001).

"Just After Big Bang, Colliding Gold Ions Exploded." UniSci: Daily University Science News (Web site). <http://unisci.com/stories/20012/0501012.htm> (June 1, 2001).

"A Look Inside the Atom" (Web site). <http://www.aip.org/history/electron/jjhome.htm> (May 18, 2001).

"Portrait of the Atom" (Web site). <http://www.inetarena.com/~pdx4d/snelson/Portrait.html> (May 18, 2001).

"A Science Odyssey: You Try It: Atom Builder." PBS—Public Broadcasting System (Web site). <http://www.pbs.org/wgbh/aso/tryit/atom/> (May 18, 2001).

"Table of Inorganic Ions and Rules for Naming Inorganic Compounds." Augustana College (Web site.) <http://inst.augie.edu/~dew/242mat.htm> (June 1, 2001).

"Virtual Chemistry Lab." University of Oxford Department of Chemistry (Web site). <http://www.chem.ox.ac.uk/vrchemistry/complex/menubar.html> (June 1, 2001).

Read more: http://www.scienceclarified.com/everyday/Real-Life-Chemistry-Vol-1/Ions-and-Ionization-Real-life-applications.html#ixzz3oEIpNoAM

Republic of the PhilippinesDepartment of Education

Region VII, Central VisayasDivision of Lapu-Lapu City

STA. ROSA NATIONAL HIGH SCHOOLSta. Rosa, Lapu-Lapu City

S.Y. 2015-2016

CERTIFICATION

This is to certify that the Strategic Intervention Material entitled Ions and Charges of the Representative Elements was validated before it was used as strategic tool in the classroom.

ELIA G. JUMAO-ASSecondary Principal I

LISTS OF STUDENTS WHO HAVE USED THE SIM

SECTION: GRADE 9-EG

NO NAME OF STUDENT SIGNATURE1 Bote, Babelyn2 Badal, Gerly3 Butalid, Jeca4 Campo, Ivy Lou5 Canete,Messiallette

6 Quijano, Jeraslyn7 Quiapo, Jonalyn8 Suico, Reslie9 Igot, Ma. Jessa10 Siton, April Mae11 Igot, Aileen12 Ompad, Eishien Angelu13 Igot, Emmarie Ann14 Minguito, Maricris15 Jumao-as, Divine Grace16 Sagarino, Lynmae17 Tradio, Elmer18 Amit, Lovely Sheine19 Amit, Valerie20 Abano, Aaliyah Marie21 Amorin, Rosemarie22 Arong, Queen Elizabeth23 Amorin, Dory Jean24 Lauron, John Clyde25 Amorin, Charjuan26 Bautista, Franco27 Abesia, John Pearson

DOCUMENTATIONSection: Grade 9-EG

RESULTS AND DISCUSSION

BEFORE USING THE SIMGroupNo.

No. of Student

Act. 1(21

Act.2(5

Act.3(10

Assessment(5

%

s pts.) pts.) pts.) pts.)Ave. Score

% Ave.Score

% Ave.Score

% Ave.Score %

1 4 20 95 5 100 8 80 4 802 4 20 95 3 60 8 80 4 803 4 18 86 3 60 8 80 3 604 4 18 86 3 60 8 80 3 60

Overall Average

14 90.5 3.5 70 8 80 3.25 70

AFTER USING THE SIM

GroupNo.

No. of Students

Act. 1(21 pts.)

Act.2(5 pts.)

Act.3(10 pts.)

Assessment(5 pts.)

%

Ave. Score

% Ave.Score

% Ave.Score

% Ave.Score %

1 4 21 100 5 100 9 90 5 1002 4 21 100 5 100 10 100 5 1003 4 21 100 5 100 10 100 5 1004 4 21 100 5 100 9 90 5 100

Overall Average

21 100 5 100 9.5 95 5 100

There was really a blast made by the students even at the start of Activity 1 with the aid of the Periodic Table of the Elements, a leap of 9.5 %. In Activity 2, there was an increase of 30 % since then the simplicity of the charged was easily determined either a cation or anion. In Activity 3, the first illustration sample of the ions was given and had helped a lot in ranging a 15% hike. Lastly, the assessment proved that their heightened performance of 30% was evidently forecasted that they have mastered the whole concept of IONS AND CHARGES OF THE REPRESENTATIVE ELEMENTS.

CONCLUSIONThe wide use of the SIM created and developed critical thinking at the same time enjoying and made learning for fun on the concepts of IONS AND CHARGES OF THE REPRESENTATIVE ELEMENTS. Therefore the use of the SIM as guide should be recommended as an effective tool in providing them drills, activities or even exercises.

I have found that if you love education,Education will love you back…

Author unknown

Continue to inspire and kept inspiring…… God Bless to all of us. Enjoy Working and Happy Teaching!!!!!!