NAZARETH SCHOOL OF NATIONAL UNIVERSITY
FIRST GRADING PERIOD
LESSON PLAN No.3
GRADE 9 CHEMISTRY
|UNIT TITLE: The Periodic Table of Elements | |LESSONS COVERED: Development of the Periodic Table, Arrangement of the Elements, Metals, Nomnetals and Metaloids | |WEEKS COVERED: August 15-16, August 19-21 | |DESIGNER: Ms. Raissa Ann A. Carasig | |Stage 1- Desired Results | |Established Goals: | |Students can… | | | |Describe the early classification of elements. | |Explain how elements in a period of the periodic table are arranged. | |Describe how the elements in a group or chemical family are arranged. | |Demonstrate understanding of the properties of elements based on periodic atomic properties. | |Manifest appreciation of the importance of knowing properties of elements and how they are used in the human body and in technology. | |Understandings: Students will understand the following… |Essential Questions: | |1. Early attempts: |Who are the people behind the development of the periodic table? | |Doberneir – triads |How did they come about the arrangement of the elements in the periodic table? | |Newlands – octaves |How will you differentiate period from group? | |Mendeleev – atomic mass |Compare the ionization energy, electron affinity and electronegativity of elements. | |Moseley – atomic number |How are elements group? | |2. Trends: |Give examples of metals, nonmetals and metalloids. | |Period (left to right) |What are the elements under the s-block? p-block? d-block? f-block? | |a. Increase: | | |Ionization energy |...
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