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Reactions Day 3
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Atoms, substances, bonds,
Welcome to FPC: Rewrite the short paragraph below Fill in the blanks When a __________ ___________ happens, _______ are broken. Then, _________ are rearranged and form new __________. After the reaction, new ___________ have been produced. Words to use: Atoms, substances, bonds, chemical reaction
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Agenda Visualizing Chemical Reactions Analysis Questions from Lab The Kinetic Molecular Theory
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Learning Targets 3- I can explain why changes in temperature and concentration affect the rate of a chemical reaction
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Learning Targets TODAY: we are going to focus on
I can describe what the kinetic molecular theory says about matter and particles I can identify the relationship between temperature and kinetic energy
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Writing and Reading Discussion Group Work Instruction Quiet Focused
Active listening On Topic Ask Questions Group Work Focus on topic Fulfill Roles Lean in Instruction Listen Take notes Raise hands
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The Mini-Hindenburg H O H O H O H Reactants Product Hydrogen + Oxygen
Water H O H O H O H
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Chemical Equations and conservation of mass
2 H2 O2 H2O 2 H O O H Two hydrogen molecules and one oxygen molecule react, forming two molecules of water.
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Analysis Questions Answer the questions Use complete sentences Work together WHEN DONE: turn in
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Particles and States of Matter
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Glow Sticks A glow stick contains two chemicals.
When the chemicals mix, a reaction occurs: GLOW! What to do: Fill a cup with water and ice Fill a second cup with hot water Put one glow stick into HOT water Put a second glow stick into COLD water Observe
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Was there a difference between the hot and the cold?
What did you see? Was there a difference between the hot and the cold?
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Copy the definition in bold!
Temperature Copy the definition in bold! Temperature is a measurement of the average kinetic energy of the particles in a substance High temperature: particles have lots of kinetic energy, high velocity, lots of motion Low temperature: particles have less kinetic energy, lower velocity, less motion
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KMT web assignment Go here: Answer questions on the handout 25 minutes Ended here 3rd and 4th
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Temperature INCREASES!
What the KMT says Temperature INCREASES! Energy? Velocity? Spacing?
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Exit Ticket Facts: On the Exit Ticket:
In order for a chemical reaction to happen, the reactants must come into contact or interact. The glow you saw was a chemical reaction The KMT says that when temperature increases, the energy and motion of particles changes. On the Exit Ticket: Explain the differences you saw in the glow sticks in hot water, and the glow sticks in cold water In the hot water the particles in the glow sticks were __________________. In the cold water they were ____________________ . This meant there were more/less ______ in the hot/cold water and thus there was more/less glow.
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