NAZARETH SCHOOL OF NATIONAL UNIVERSITY SY 2013-2014 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
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Purpose: The purpose of this lab was to analyze the trends of the atomic radius (AR) and the first ionization energy (IE) for the first 36 elements of the periodic table. Procedure: A piece of graph paper was given out by the teacher. A periodic table that has the atomic number‚ atomic radius (AR)‚ and first ionization energy (IE) was given out by the teacher. A sheet of paper was taken out to record the elements‚ atomic number‚ atomic radius (AR)‚ and the first ionization energy (IE). To record
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series describing the relative reactivity of the metals being tested. The elements within a periodic table often show different trends in physical and chemical properties depending on the period or group they are apart of. In a periodic table‚ elements are arranged by increasing atomic number in horizontal rows called periods. The atomic numbers represent the number of protons in each element. The periodic table is also arranged such that elements with similar properties are in vertical columns known
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scientist involved in formulating the modern periodic table and describe why their work made a significant contribution to the development of the periodic table. Dmitri Mendeleev’s contribution to the modern day periodic table is widely renowned in the history of chemical science. Mendeleev was the creator of the periodic table; arranging 63 known elements in order of their atomic mass. His discovery made a significant impact in the development of the periodic table as it set the foundation for further
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element can’t be distinguished between a metal and nonmetal due to having properties from both‚ they then classify as metalloids. Thus‚ making Tellurium a metalloid and belonging to the chalcogen family‚ which is located in group 16 on the periodic table. Chalcogens are also known as the Oxygen family and considered the Main Group
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Lesson 03.01: History of the Periodic Table •Explain how scientific observations led to the development of‚ and changes to‚ the periodic table. -Dmitri Mendeleev- first periodic table‚ organized 63 known elements according to properties‚ organized into rows and columns and wrote name‚ mass‚ and chemical properties on each -Julius Lothar Meyer- independently worked in Germany‚ similar to Mendeleev -Henry Gwyn Jeffreys Moseley- Worked with Ernest Rutherford‚ experimented with 38 metals‚ he found
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Chemistry Research Task The Periodic Table of Elements The Periodic Table of Elements is used as a way of displaying all the known chemical elements; it is accepted and used all over the world. The periodic table’s layout is very well structured; it consists of vertical rows called groups and horizontal rows called periods. It is one of the most important resources in chemistry and the key to discovering new elements. The beauty of the Periodic Table is that a lot of information about any
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Homework Packet Periodic Table (70 pts) Historical Background of the Periodic Table (pp. 113-116) 1. What did John Newlands contribute to the Periodic Table? 2. List three ideas Mendeleev used to design the modern Periodic Table. (3) a. b. c. 3. How did Moseley modify the Periodic Table? Characteristics of the Periodic Table (pp. 117-122) 4. Do the periods of the table go horizontal or vertical across the table? 5. Do the groups of the table go horizontal or vertical across the table? Class
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PERIODIC TABLE Name:- Brexi Joseph Form:- 3-3 Subject:- Chemistry Teacher:- Rochelle Joseph TABLE OF CONTENTS Periodic Table.......................................................................................................................................2 Dmitri Mendeleev.................................................................................................................................3 John Newlands........................................................
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Chapter 3 PERIODIC TABLE AND PERIODICITY OF PROPERTIES Q.1 What are the contributions of Dobereiner‚ Newland‚ Luthar Meyer and Mendeleef in the present shape of long form periodic table ? Dobereiner’s Triads : In 1829‚ a German scientist‚ John Dobereiner classified specific elements into groups in order of increasing atomic masses. Each group has three elements. He named these groups as triads.He noticed that the atomic mass of the middle elements was found to be approximately equal to the
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