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Agenda Announcements! Homework Check
Solving the puzzle of the periodic table video Activity: Organizing the Periodic Table Foldable! Chemical Families Video: Periodic Table Crash Course
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Groups in the periodic table that share the same properties
Chemical Families Groups in the periodic table that share the same properties
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Foldable Instructions
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Group 1: Alkali Metals Group 1 Elements Shiny, silvery, and soft
Highly reactive Relatively low densities and float on water Usually combine with other elements and compounds In Bohr Rutherford Diagrams, they all have 1 valence electron
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Group 1: Alkali Metals Applications
Potassium is found in bananas and oranges and is good for athletes Sodium is found in salt and baking soda
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Group 2: Alkaline Earth Metals
Group 2 elements Silvery, shiny Not as soft or reactive as alkali metals Burn bright colourful flames In Bohr Rutherford diagrams they all have 2 valence electrons
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Group 2: Alkaline Earth Metals
Applications Magnesium is used in fireworks Calcium is used in the body to build bones Strontium in shells of coral
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Group 17: Halogens Group 17 elements
Very reactive so rarely exists on their own Poisonous in large amounts Form compounds with alkali metals Can be found in solid, liquid or gas at room temperature In Bohr Rutherford diagrams, they all have 7 valence electrons
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Group 17: Halogens Applications Used in lightbulbs for lamps
Chlorine used to disinfect
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Group 18: Noble Gases Group 18 elements Very stable and unreactive gas
Colourless, tasteless, odourless Glow brightly when electric current passes through it Mostly non-toxic (except radon) In Bohr Rutherford diagrams, their valence shell is always full
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Group 18: Noble Gases Applications Neon lights
Helium used for balloons
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Think about it Aladdin discovered a new element. He noticed that it was liquid at room temperature and is highly reactive. Where do you think the element may belong on the periodic table? Explain.
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Periodic Table https://www.youtube.com/watch?v=0RRVV4Diomg
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