carbon time the meaning of organic. entry task what is happening when methane burns? explain where...
TRANSCRIPT
Entry Task
What is happening when Methane Burns?
Explain where atoms are moving, How atoms are rearranged into molecules,
How energy is transformed
Have Out
• Molecular Models for Methanol Burning Worksheet
• Explanation Tool: What happens when Methanol burns?
With a neighbor
Compare your explanations for each of the 3 questions
Then, compare your overall explanations (Back of tool)
Ethanol Burning: As a class
How have your ideas / explanations changed?
What do you know now that you didn’t know before?
How has the scale of your thinking changed?
Materials Card Sort
1 Minute
Examine the cardsSort the materials into two piles
Use any rules you choose for creating the two piles
Be ready to share your reasons
Why can some things burn while other things cannot burn?Why does ethanol behave more like wood than like water?
Driving questions
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What are the similarities & Differences between Water & Ethanol?
Water Both Ethanol
Do you have any new ideas to add to the list now?
Zooming in… Microscopic and Atomic-Molecular Scales
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Water droplet(Atomic-
Molecular)
Ethanol droplet (Atomic-
Molecular)
Paper Fibers (Microscopic)
Zooming in… Atomic-molecular Scale
Ethanol molecule (C2H5OH)
Water molecule (H2O)
Cellulose: an important part of wood (C6H10O5)n
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What ATOMS are found in these materials?
Ethanol molecule (C2H5OH)
Water molecule (H2O)
Cellulose (C6H10O5)n
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ATOMS FOUND IN EACH MOLECULE:
Water: Hydrogen, Oxygen
Ethanol: Hydrogen, Oxygen, Carbon
Wood: Hydrogen, Oxygen, Carbon
What ATOMS are found in these materials?
Ethanol molecule (C2H5OH)
Water molecule (H2O)
Cellulose (C6H10O5)n
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What BONDS are found in these materials?
Ethanol molecule (C2H5OH)
Water molecule (H2O)
Cellulose (C6H10O5)n
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BONDS FOUND IN EACH MOLECULE:
Water: H-O
Ethanol: H-O, C-O, C-H, C-C
Wood: H-O, C-O, C-H, C-C
What BONDS are found in these materials?
Ethanol molecule (C2H5OH)
Water molecule (H2O)
Cellulose (C6H10O5)n
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What BONDS are found in these materials?
Ethanol molecule (C2H5OH)
Water molecule (H2O)
Cellulose (C6H10O5)n
Chemical Energy
Energy found in the bonds of molecules. C-C and C-H bonds means molecules have available chemical energy.
So which materials have available chemical energy?
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MATTER AND ENERGYEvery molecule has both ATOMS and BONDS
ATOMS TELL YOU ABOUT MATTER
BONDS TELL YOU ABOUT ENERGY
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Materials That Burn
WATER
Materials That Do NOT Burn
CARBON DIOXIDE
SALT
OXYGENNITROGEN
WOOD
BUTANE
PROPANE ETHANOL20
What makesthese burn?
How are these different?
WATER
CARBON DIOXIDE
SALT
OXYGENNITROGEN
WOOD
PROPANE ETHANOL
BUTANE
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Water, Ethanol, and WoodEthanol and wood both have C-C and C-H bonds.
Ethanol molecule (C2H5OH)
Water molecule (H2O)
Cellulose (C6H10O5)n
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ORGANIC INORGANIC--means the molecule has C-C and C-H bonds
--means the molecule does not have C-C and C-H bonds
WATER
CARBON DIOXIDE
SALT
OXYGENNITROGEN
WOOD
BUTANE
PROPANE ETHANOL23
What Makes Up Living Things?
Inorganic: Water, minerals; Organic: carbohydrates, fats, proteins
Water Carbo-hydrate
Protein Fat Minerals
Average human
60% 1% 15% 23% <1%
Average apple
85% 14% 0.5% 0.5% <1%
Average chicken
62% <1% 30% 8% <1%
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Materials Card Sort
Resort your cards based on material type
Pile 1: Foods, fuels, bodies of living or dead things
Pile 2: Not food, Not fuel, Not living / dead
Materials Card Sort
Resort your cards based on Bonds
Pile 1: Contain C-C or C-H bonds
Pile 2: Do NOT contain C-C or C-H bonds