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PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang LESSON PLAN Subject Grade / Semester Academic year Competence standard Basic competence Values Key Words Learning Objectives : Chemistry Teacher: Handayani : X/1 : 2012/2013 : 1.Understanding the atomic structure of elements, the type of bonding in compound, and the properties of element in periodic table : 1.1 Understanding the atomic structure based on Bohr atomic theory, the properties of elements, relative atomic mass, characterizations of periodic table and it arrangement through electron configuration : Respect, Courage, Excellent : Atoms, Protons, Neutron, and Electron, Charges Indicator Focusing Question Introduction Student How far did to the topic know the you know of chemistry topic of about in one chemistry chemistry? semester subject in Smash a leaf one semester into small history of atomic Student able pieces. development to determine Smash it into the a powder State the differences then ask, relative between “How can charges and proton, we smash approximate neutron and this powder relative electron as smaller? masses of the sub What made protons, particle in an up an neutrons atoms, and element?” and write the electrons symbol of Teaching Activities/Learning Style/Time Allocation Starter activity/Audio/25 Minutes Giving a brief about the procedure and topic in chemistry subject. Have them to giving what they know, what they want to learn and what have they learn about chemistry. TM : lecture, and discussion Main Activity/Audio, Visual, Kinesthetic/45 minutes Explorasi Divide students into groups for discussion and group working Ask the studendts to read their book Elaborasi Give a brief about element and atom. Explain the material about atom and inside of atom, and having discuss with the students Explain the history of atom’s idea from Democritus until Niels Bohr atomic models Discuss the differences of each atomic theory which suggested. Supporting Assessment activities PT (Penugasan • Gallery Walk : terstruktur) : Make a display giving home work of discussion for discuss the report and have atomic number and the other group mass number of an give comment atom related to their display KMTT : Making journal about history of atomic development Resources and material Resources : Complete Chemistry For IGCSE : Atoms Element and Compound Materials needed : Power point, Text book, marker. PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang element with their atomic and mass number. Discuss the sub atomic particles and the difference Konfirmasi Have the students to make a display report and share their discussion report to the other groups while the other groups compare the information with the information they get by gallery walk Have them to walk around the class and see other group display and giving comment related to the topic Review the displays and comments Give information of the lesson for the next meeting Material ATOMIC STRUCTURE • • • • • Atom is a small particle that cannot be spilt become the smaller particle. Atomic theory starting from John Dalton, 1800 -Dalton proposed a modern atomic model based on experimentation not on pure reason. All matter is made of atoms. Atoms of an element are identical. Each element has different atoms. Atoms of different elements combine in constant ratios to form compounds. Atoms are rearranged in reactions 1) Dalton’s “Billiard ball” model (1800-1900) Atoms are solid and indivisible. Questions 1. copy and complete the table show Atom Number of Number of protons neutrons 16 O 18 207 Pb 82 37 Cl 17 Number of electron 2. Complete using the word below Electrons, equal, neutrons, no nucleons, positive, protons, shells PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang 2) Thompson “Plum pudding” model (1900) Negative electrons in a positive framework The nucleus of an atom contains______ and_______. The general name for protons and neutrons is_________. Protons have a ______ charge but neutrons have______ charge. Outside the nucleus are the_______, which are negatively charge. The electrons are arranged in_____or level energy. The number of protons in an atom is_____to the number of electrons. 3. You can use the symbol of an element to work out the numbers of protons, neutrons and electrons there are in its atom. Draw, or write, a revision summary about how you do this. No 1 3) The Rutherford model (around 1910) 2 Atoms are mostly empty space. Negative electrons orbit a positive nucleus. Inside the atom 1. Proton 2. Electron 3. Neutron Subatomic Particle Symbol Relative mass Relative charge Proton P 1 +1 Neutron N 1 No charge 3 Answer P = 18, e = 18, n = 2 P = 82, e = 82, n = 125 P = 17, e = 17, n = 20 Protons and neutrons, nucleons, positive, no, electrons, shell, equal We can use the nucleon number and proton number to work out the number of neutron in an atom. Number of neutron : nucleon number – atomic number or Number of neutron : mass number – atomic number Score 6 8 6 PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang Electron E 0,00054 -1 Acknowledged by, Principal Erma Retnowati Palembang, August 2012 Subject Teacher, Handayani PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang LESSON PLAN Subject Grade / Semester Academic year Competence standard Basic competence Values Key Words Learning Objectives Define proton number and nucleon number Adoption Define isotopes State the two types of isotopes as being radioactive and non radioactive : Chemistry Teacher : Handayani : X/1 : 2012/2013 :1. Understanding the atomic structure of elements, the type of bonding in compound, and the properties of element in periodic table : 1.1 Understanding the atomic structure based on Bohr atomic theory, the properties of elements, relative atomic mass, characterizations of table and it arrangement through electron configuration : Excellence, Collegiality : Atomic number and mass number, symbol of element Indicator Student able to determin e the relative atomic mass of element in periodic table. Student able to write the symbol of element Focusing Question How can we measure the mass of iron atom? How can we measure the mass of iron atom?, If there any difference between the mass of iron atom and carbon atom, how do we know that? Teaching Activities/Learning Style/Time Allocation Starter activity/Audio/10 Minutes Having the student to do the gallery walk and giving positive comment to the others display. TM(Tatap Muka) : lecture by explanation, and group discussion Main Activity/Audio, Visual, Kinesthetic/25 minutes Elaborasi Ask the students to read their book Ask one of the student to present what they have got by presenting Eksplorasi Give a brief about the symbol of element and what is atomic number, what is mass number. Give a brief how to write the symbol of element and how to calculate neutron in an atom Have them to write the exact symbol of element from the question cards one by one. Explain about isotopes and radioactivity Have them to watch the video about radiation of radioactive Supporting activities Assessment PT : Giving homework about how to determine number proton and neutron Individual work : Writing the answer in a cards on the white board one by one KMTT : Giving homework to make of resume of discussion and discuss it with their teacher after the lesson Searching the periodic Resources and material Resources : Complete Chemistry For IGCSE : More about atoms Materials needed : Power point, periodic table. www.chem-istry.org PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang State one medical and one industrial use of radioactive isotopes Classify elements into isotopes, Isobars and isoton) complete with their atomic number and mass number Student able to explain the term isotopes. Student able to mention the function of isotopes in medical and industrial use Have them to observe the video and compare the emission of different kind of radioactive. Have them to share their information to others group. Each group have to make a resume for discussion. Give one radioactive isotope to each group and have them to make a preparation to present the use of the element in medical and industrial by making the power point slides which will be performed next meeting Konfirmasi Having confirmation with the students and making the conclusion Ask the students what have they learn? How can we write the symbol of element? How can we calculate the number of neutron in an atom Give information of the lesson for the next meeting : They will observe a video about radioactivity and make a group discussion about it. Materi An Element has different symbol, element has particular properties which distinguish them from another element. advantages of isotop radioactive Questions Complete the blank box below 1. Element # of protons Atomic # (Z) Carbon 6 PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang Complete Symbols Contain the symbol of the element, the mass number and the atomic number Mass number X Atom number Phosphorus 15 Gold 79 Nuclide p+ n0 e- Mass # Oxygen -18 10 X = element symbol Arsenic We can use the nucleon number and proton number to work out the number of neutron in an atom. Number of neutron : nucleon number – atomic number or Number of neutron : mass number – atomic number Phosforus - 31 For example : sodium has 23 nucleon and 11 protons, so the number of neutrons in a sodium atom is 23 – 11 = 12 neutrons. Atomic Number Atoms are composed of identical protons, neutrons, and electrons How then are atoms of one element different from another element? Elements are different because they contain different numbers of PROTONS The “atomic number” of an element is the number of protons in the nucleus # protons in an atom = # electrons Mass Number Mass number is the number of protons and neutrons in the nucleus of an isotope: Isotopes -75 33 42 15 2. An Atom of neon has 10 protons and 11 neutrons. How many nucleons does it contain? 3. By referring to subatomic particles, explain why an atom of nitrogen is electrically neutral? Answer No 1 2 3 Answer Proton = 6 Atomic = 15 Atomic = 79 Nucleon consist of protons and also neutrons = 10 + 11 = 21 An atom has no overall charge it Score 1 1 1 3 4 PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang Dalton was wrong about all elements of the same type being identical Atoms of the same element can have different numbers of neutrons. Thus, different mass numbers. These are called isotopes. Frederick Soddy (1877-1956) proposed the idea of isotopes in 1912 Isotopes are atoms of the same element having different masses, due to varying numbers of neutrons. Soddy won the Nobel Prize in Chemistry in 1921 for his work with isotopes and radioactive materials. Isotopes are atoms of the same element having different masses, due to varying numbers of neutrons. Isotope Protons Electrons Neutrons Hydrogen–1 (protium) 1 1 0 Hydrogen-2 (deuterium) 1 1 1 1 1 2 Hydrogen-3 (tritium) Nucleus Isotopes Elements occur in nature as mixtures of isotopes. Isotopes are atoms of the same element that differ in the number of neutrons. Isobar is an atom which come from different element but has the same mass number , for example are 14C,14 N Isotone is an atom which comes from different element but has same the number of is electrically neutral Questions 1. What does isotopes mean? 2. Complete using the words below Different, element, industrial, isotopes, nucleon, neutrons The ______number of an atom is the total number of ______ and protons present. Atom of an______ with_____number of neutrons are called_____.radioisotopes have many different medical and______uses Answers No 1 Answer Isotopes are atoms of the same element having different masses, due to varying numbers of neutrons Score 2 2 Nucleon, neutrons, element, different, isotopes, industrial a. 143 b. 8 c. 32 6 3 3 PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang neutrons, for example are 32 S, 16 31 P 15 Acknowledged by, Principal Palembang, August 2012 Subject Teacher, Erma Retnowati Handayani PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang LESSON PLAN Subject Grade / Semester Academic year Competence standard Basic competence Values Key Words Learning Objectives The historical development of the periodic table The modern periodic system Periodic properties of the element : Chemistry Teacher : Handayani : X/1 : 2012/2013 :1. Understanding the atomic structure of elements, the type of bonding in compound, and the properties of element in periodic table : 1.1 Understanding the atomic structure based on Bohr atomic theory, the properties of elements, relative atomic mass, characterizations of table and it arrangement through electron configuration : Excellence, Collegiality : Atomic number and mass number, symbol of element Indicator Students know and understand the historical development of the periodic table Students able to determine periodic properties of the element Students able to memorize group of elements Focusing Question How many elements are present in periodic table? Are they have categorise apperence to make different? What are the things to classified the elements in periodic table? Teaching Activities/Learning Style/Time Allocation Starter activity/Audio/10 Minutes Give the sudents short information about the material that we are going to do TM(Tatap Muka) : lecture by explanation, and group discussion Main Activity/Audio, Visual, Kinesthetic/25 minutes Elaborasi Ask the students to read their book Eksplorasi Ask the students to make a group of discussion Every group has to answer the question about the development of the periodic table which the teacher has prepare After they having discuss ask them to present and explaining about their display Answer and question session Confirmation Give them short explanation or reflection about the matter Point one student to recall or tell the conclusion in front of the Supporting activities PT : Give the students an exercise or homework KMTT : Make the jorunal of historical development of periodic table Assessment Presenta tion Exercise Homework periodic Resources and material KTSP chemistry book and ALevel book PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang class Ask them answer the question in their exercise book Material Development of Periodic Table that was found b some scientist 1. Antoine Lavoisier Questions 1. ~1770-1789 Wrote the first extensive list of elements containing 33 elements. Distinguished between metals and non-metals. 2. John Jacob Berzellius (1828) Developed a table of atomic weights. Introduced letters to symbolize elements 3. Johann Döbereiner 1829 Developed 'triads', groups of 3 elements with similar properties. Lithium, sodium & potassium formed a triad. Calcium, strontium & barium formed a triad. Chlorine, bromine & iodine formed a triad. 4. John Newlands 1864 The known elements (>60) were arranged in order of atomic weights and observed similarities between the first and ninth elements, the second and tenth elements etc. He proposed the 'Law of Octaves' 5. Lothar Meyer 1869 PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang Compiled a Periodic Table of 56 elements based on the periodicity of properties such as molar volume when arranged in order of atomic weight. Dimitri Mendelev (1869) 6. Produced a table based on atomic weights but arranged 'periodically' with elements with similar properties under each other. Gaps were left for elements that were unknown at that time and their properties predicted (the elements were gallium, scandium and germanium). The order of elements was rearranged if their properties dictated it, eg, tellerium is heavier than iodine but comes before it in the Periodic Table. Acknowledged by, Principal Palembang, August 2012 Subject Teacher, Erma Retnowati Handayani PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang LESSON PLAN Subject Grade / Semester Academic year Competence standard Basic competence Values Key Words Learning Objectives Write the chemical equation Balancing equation State the phase of substances : Chemistry Teacher : Handayani : X/1 : 2012/2013 :2. Understanding about Basic Law of chemistry and the Application in chemical calculation (sthociometry) : 2.1 Description about Nomenclature system of compounds and chemical equations : Excellence, Collegiality : Reactants, Products, Balancing equations Indicator Students understand how to writing chemical equation Students able to balancing the equation Focusing Question Could you mention about chemical reaction that take a place in our life? Give the example What does chemical equation mean? Teaching Activities/Learning Style/Time Allocation Supporting activities PT : Give the students an exercise or homework Starter activity/Audio/10 Minutes Give the sudents short information about the material that we are going to do TM(Tatap Muka) : lecture by explanation, and giving an exercise Main Activity/Audio, Visual, Kinesthetic/25 minutes Elaborasi KMTT : Ask the students to read their book Eksplorasi Ask the students about the things that they have got from read the book? Explain about term of chemical equation, and the the point that involve in chemical equation, such as how to writing the chemical equation Explain how to balancing the chemical equation Give an example and ask one of students to answer the question Confirmation Together with the students to conclude or make the summary about the topic today Point one student to recall or tell the conclusion in front of the Assessment Exercise Homework Resources and material KTSP chemistry book and ALevel book PEMERINTAH PROPINSI SUMATERA SELATAN DINAS PENDIDIKAN SMA N SUMATERA SELATAN (SAMPOERNA ACADEMY) Jl. Pangeran Ratu Seberang Ulu I Kec. 8 Ulu Palembang class Ask them answer the question in their exercise book Acknowledged by, Principal Palembang, 5 November 2012 Subject Teacher, Erma Retnowati Handayani