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Chemistry 2.1
- 1. Chemistry Chapter 2 - Section 1 Chemical Formulas & Equations Monday, July 9, 2012
- 2. Physical or Chemical? Monday, July 9, 2012
- 3. Physical or Chemical? Monday, July 9, 2012
- 4. Physical or Chemical? Yeast + Hydrogen Peroxide = ??????? Monday, July 9, 2012
- 5. Chemical Reaction? Monday, July 9, 2012
- 6. Chemical Reaction? A process that produces a chemical change Monday, July 9, 2012
- 7. Chemical Equations Monday, July 9, 2012
- 8. Chemical Equations Monday, July 9, 2012
- 9. Chemical Equations Substances that exist before the reaction begins Monday, July 9, 2012
- 10. Chemical Equations Substances that Substances that exist before the form as a result reaction begins of the reaction Monday, July 9, 2012
- 11. Describe What is Happening Monday, July 9, 2012
- 12. Describe What is Happening I use a chemical equation to know the reactants, products and proportions of each substance. Monday, July 9, 2012
- 13. Describe What is Happening Monday, July 9, 2012
- 14. Describe What is Happening My Chemical Equation can use words, chemical names, or formulas. Monday, July 9, 2012
- 15. Using Words Baking Soda + Vinegar --> Gas + White Solid Charcoal + Oxygen --> Ash + Gas + Heat Monday, July 9, 2012
- 16. Chemical Names Acidic Acid + Sodium Hydrogen Carbonate --> Sodium Acetate + Water + Carbon Dioxide Monday, July 9, 2012
- 17. Chemical Formula’s CH3COOH + NaHCO3 --> CH3COONa + H2O + CO2 Acetic Sodium Sodium Water Carbon Acid Hydrogen Acetate Dioxide Carbonate Monday, July 9, 2012
- 18. Arrows and Subscript Monday, July 9, 2012
- 19. It’s All a Balancing Act Monday, July 9, 2012
- 20. Conserve That Mass Monday, July 9, 2012
- 21. Conserve That Mass The mass of the products must be the same as the mass of the reactants in the chemical reaction. Monday, July 9, 2012
- 22. Conserve That Mass The mass of the products must be the same as the mass of the reactants in the chemical reaction. Atoms are never lost of created in a chemical reaction; however they do change partners. Monday, July 9, 2012
- 23. Conserve That Mass Monday, July 9, 2012
- 24. Let’s Try Tarnishing silver.... Ag + H2S --> Ag2S + H2 Hydrogen Silver Silver sulfide Hydrogen Sulfide Monday, July 9, 2012
- 25. Let’s Try Monday, July 9, 2012
- 26. Let’s Try Na + AlCl3 --> NaCl + Al KBr + Cl2 --> KCl + Br2 H2O2 --> H20 + O2 Monday, July 9, 2012
- 27. Energy in a Chemical Equation Monday, July 9, 2012
- 28. Energy in a Chemical Equation Energy is often released or absorbed during a chemical reaction. Monday, July 9, 2012
- 29. Energy Released Monday, July 9, 2012
- 30. Energy Released Where does this energy come from? Monday, July 9, 2012
- 31. Energy Released Where does this energy come from? You have to think about the chemical bonds of the reactants and the products, in order to answer this question. Monday, July 9, 2012
- 32. Energy Released Monday, July 9, 2012
- 33. Energy Released When energy is released, the products are more stable, and their bonds have less energy than those of the reactants. Monday, July 9, 2012
- 34. Energy Released When energy is released, the products are more stable, and their bonds have less energy than those of the reactants. The extra energy is released in different forms: light, sound, thermal energy. Monday, July 9, 2012
- 35. Energy Absorbed Monday, July 9, 2012
- 36. Energy Absorbed When energy is absorbed, the reactants are more stable, and their bonds have less energy than those of the products. Monday, July 9, 2012
- 37. Energy Absorbed When energy is absorbed, the reactants are more stable, and their bonds have less energy than those of the products. The extra energy needed to form the products can be supplied in the form of electricity, light, sound, thermal energy. Monday, July 9, 2012
- 38. Energy Released 2H2 + O2 --> 2H2O + energy Monday, July 9, 2012
- 39. Energy Released 2H2 + O2 --> 2H2O + energy 2H2O + energy --> 2H2 + O2 Monday, July 9, 2012
- 40. Energy Released 2H2 + O2 --> 2H2O + energy Energy Absorbed 2H2O + energy --> 2H2 + O2 Monday, July 9, 2012
- 41. When thermal energy is gained or lost, special terms are used…. Monday, July 9, 2012
- 42. When thermal energy is gained or lost, special terms are used…. Monday, July 9, 2012
- 43. When thermal energy is gained or lost, special terms are used…. Monday, July 9, 2012
- 44. When thermal energy is gained or lost, special terms are used…. Absorb Release thermal thermal energy energy Monday, July 9, 2012
- 45. Endothermic or Exothermic Absorb or Release Quickly or Slowly Monday, July 9, 2012
- 46. Adding ENERGY to the equation Monday, July 9, 2012
- 47. Finished! Monday, July 9, 2012