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Review: How to make a molecule…

Review: How to make a molecule…. Formula. Visual model. H 2 O. Subscript. No Subscript, There is only 1 atom of oxygen in the molecule. Review: How to make a molecule…. Formula. Visual model. H 2 O. No Subscript, There is only 1 atom of oxygen in the molecule. Subscript.

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Review: How to make a molecule…

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  1. Review: How to make a molecule… Formula Visual model H2O Subscript No Subscript, There is only 1 atom of oxygen in the molecule

  2. Review: How to make a molecule… Formula Visual model H2O No Subscript, There is only 1 atom of oxygen in the molecule Subscript H2O2

  3. Review: How to make a molecule… Formula Visual model 6 H2O Coefficient- How many molecules you have.

  4. H2O 1 molecule of H2O

  5. 3 H2O 3 molecules of H2O

  6. Let’s now model another chemical equation with our M&M’s… 1 atom carbon react with 1 molecule oxygen 1 molecule CO2 1 carbon 2 oxygen 1 carbon 2 oxygen

  7. Is it a balanced equation? How do we know? 1 molecule CO2 1 atom carbon + 1 molecule oxygen 1 carbon 2 oxygen 1 carbon 2 oxygen

  8. Law of Conservation of Mass Matter is not created or destroyed, it just changes forms. In a chemical reaction…

  9. Evidence of a chemical reaction: (chemical change) • Production of a gas (bubbling, fizzing or foaming) • A change in temperature or light (an energy change) • Appearance of a precipitate (solid material) • A change in color

  10. More practice… 2 atoms carbon react with 2 molecule oxygen 3 molecules CO2 2 carbons 4 oxygen 3 carbons 6 oxygens Is it balanced?

  11. With a partner… Instructions: Create visual models for the rest of the chemical equations. Draw an label the visual models. 3. For each equation complete the following stem: The equation is/is not balanced because… Chlorine Sodium Oxygen Hydrogen Carbon Color Key

  12. The model above is best represented by: • H2O • 2OH • HOOH • H2O2

  13. The above model shows: • 10 atoms • 2 molecules • 2CH3Cl • All of the above

  14. 6CO2+ 6H20+ Sun’s light C6H12O6+6O2 The above reaction… • is photosynthesis • Is respiration • Transforms radiant energy into chemical energy • Both a and c.

  15. Organic Molecules all contain… • Sulfur • Carbon • Oxygen • nitrogen Correct!

  16. All of the following are organic molecules except… • C6H12O6 • CH4 • C6H6O • H20

  17. Evidence of a chemical reaction: (chemical change) • Production of a gas (bubbling, fizzing or foaming) • A change in temperature or light (an energy change) • Appearance of a precipitate (solid material) • A change in color • A change in odor

  18. A chemical equation tells the story of a chemical reaction. Our combustion reaction again…

  19. Chemical Reaction Dehydration of sugar…

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