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Published byVincent Godfrey Porter Modified over 9 years ago
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WELCOME!! 1.Please be in your seats by the time the bell rings. 2.On your catalyst sheet you should be on October 27 th.
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Your atomic # is 10. What is your number of protons and electrons. Now you have a mass # of 13, what is your number of neutrons? 5 MINUTES CATALYST
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4 MINUTES CATALYST You atomic # is 10. What is your number of protons and electrons. Now you have a mass # of 13, what is your number of neutrons?
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You atomic # is 10. What is your number of protons and electrons. Now you have a mass # of 13, what is your number of neutrons? 3 MINUTES CATALYST
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Your atomic # is 10. What is your number of protons and electrons. Now if your mass number is 13. What is your number of neutrons? 2 MINUTES
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CATALYST Your atomic # is 10. What is your number of protons and electrons. Now if your mass number is 13. What is your number of neutrons? 1 MINUTE
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TIME’S UP!!!!!
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Catalyst Answer You atomic # is 10. What is your number of protons and electrons. 10 Now you have a mass # of 13, what is your number of neutrons? 3
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AGENDA Catalyst Notes over Electron Levels Bohr Model practice
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ANNOUNCEMENTS 1.See me for help. 2.Quizzes to be taken Friday if not taken. 3.Chemical science Halloween demos on Friday
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TODAY’S OBJECTIVE Today you will be introduced to electron orbit levels and practice with the Bohr model diagram. HS-PS1-2: Create knowledge of reaction based on patterns of properties
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How are atoms drawn? Electron Diagrams!!!! Nucleus is still located in the center Electrons are placed in their orbitals Note the pattern at which electrons are filled in each orbital: First orbital holds TWO electrons Second orbital holds EIGHT electrons Third orbital holds EIGHT electrons
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Drawing the diagram: Example: Draw electron diagram for carbon: 6 protons, 6 neutrons, 6 electrons Step 1: Find the number of electrons – According to our example, how many electrons does carbon have? – 6!! P- 6 N-6 Nucleus
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Drawing the diagram Example: Draw electron diagram for carbon: 6 protons, 6 neutrons, 6 electrons Step 2: Draw first electron orbital around nucleus. – How many electrons does it hold? – 2!! P- 6 N-6
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Draw the diagram Example: Draw electron diagram for carbon: 6 protons, 6 neutrons, 6 electrons Step 3: If more electrons need to be filled, draw another electron shell. – How many electrons does the second shell hold? – 4!! – How many electrons do we have left over? – 0!! P- 6 N-6
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Example Argon: 18 protons, 22 neutrons, 18 electrons
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Example Helium: 2 protons, 2 neutrons, 2 electrons
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Example: Oxygen: 8 protons, 8 neutrons, 8 electrons
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Example: Aluminum: 13 protons, 13 neutrons, 13 electrons
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