Detailed Lesson Plan in Science –9 (CHEMISTRY) CO-3 Performance Standard: The learners should be able to compare and contrast ionic and covalent bond using multi-media presentation. Content Standard: The learners demonstrate an understanding of how atoms combine with other atom by transferring or sharing electrons. I. Objectives: At the end of 60 minutes, the students are expected to achieve 75% level of proficiency of the following: II. Explain the formation of ionic, metallic and covalent bond; Recognize different types of compounds (ionic or covalent); and Explain how ions formed. Subject Matter: A. Topic: Chemical Bonding B. References: Science-9 Learners Module pp.90-102; http://curriculum.nismed.upd.edu.ph; and Phoenix Science Series-Chemistry Textbook pp. 276-310. C. Materials: Power Point Presentation, Periodic Table of Elements, cardboard, and chalk D. Teaching Methods: Group Work Strategy E. Science Concept: The sharing or complete transfer indicates that the atom has attained stability. Either the sharing or complete transfer of electrons leads to the formation of compounds. The valence electrons are the outermost electrons which are directly involved in chemical bonding. Covalent bonds may be polar or nonpolar. Metallic bonding exists in metal through the attraction between the freely-moving valence electrons and the positively charged metal atom. III. Learning Activities Teacher’s Activity A. Preliminary Activities 1. Prayer 2. Greetings Good morning class. 3. 4. Checking of Attendance Is anyone absent today? Setting of Classroom standards What are the important rules to be followed while the class is going on? 5. Review You have learned about the particles of Matter. Learners’ Activity - Good morning Teacher Analyn. Good morning classmates. - None teacher. - Listen when somebody is talking. - Raise our right hand if we want answer. - Work cooperatively and harmoniously. -The particles of matter like atoms are composed of electrons, protons and neutrons. Get your Periodic table. What do you notice about the electronic configuration of the noble gas? 6. Motivation Look at the Periodic table. Did you notice the vertical arrangement of the element? Notice the number of each group? Do you know what information it gives you? - Except for helium, all of them have eight electrons at the outermost energy level. -This is called family or group. -The number of valence electrons. 7. Presentation Do you still remember the meaning of Valence electrons? -Valence electrons are the outermost electrons which directly involved in chemical bonding. The valence electron gives you the number of electrons at the outermost energy level of the atom. This information you need to know in order for you to determine whether atoms transfer, accept, or share electrons to become stable. B. Developmental Activities: By the used of the Projector (Slide show) there are some key learning check regarding the different types of bonds. Activity Sheet: Compounds Structural Formula Types of Chemical bonding Borane BH3 Iodine gas I2 Silver Wire Ag C. Discussion Using a projector (Slide Show) to present to the class, progressively run through the slides to impart all the key points about different forms of chemical bonding. D. Generalization How ionic and covalent compounds forms? - The sharing or complete transfer indicates that the atom has attained stability. Either the sharing or complete transfer of electrons leads to the formation of compounds. Why is an ionic compound different from a covalent compound? -Ionic bond is an electrostatic force of attraction which is formed between two oppositely charged ions, while covalent bond is a force of attraction which is formed between two atoms sharing electrons. How is metallic bond formed? -Metallic bond is a force attraction which is formed between two metals. 1. 2. 3. 4. 5. IV. Evaluation In HCl molecule, the atoms are held by___________________. a. Ionic compound c. hydrogen bond b. Covalent bond d. metallic bond A covalent bond____________. a. Involves shared electrons c. results from the transfer of electrons b. Is formed by sharing of electron d. is also called electrovalent In an ionic bond____________________. a. Electrons are transferred c. there are London forces b. Electron are equally shared d. there is unequal charge distribution Which of the following substances are ionic? a. MgCl2 b. CO c. H2S d. SO2 b. Which of the following elements can be paired to form a covalent compound? a. K b. Cl c. C d. O a. A&B b. A&C c. B&D d. C&D V. Assignment: Study the Carbon Compounds. Prepared by: ANALYN D. ITAAS T-I Science-9 Teacher Checked and Reviewed by: JESSICA B. PANGANORON P-I Secondary School Principal