9/26/11

1. 77 Balancing Equations 78 Balancing Equations 9/26/11 10/28/2013 10/28/2013 • Practice/Application/Connection/ • Paste Notes/Quiz here when graded: • Exit: • In the following equation, the elements are rearranged to form new products. What should be placed in the box to the right? • C+ O2 Starter: Label the parts of the equation:

2. October 25, 2013AGENDA8.5 F.I will be able to recognize whether a chemical equation containing coefficients is balanced or not and how that relates to the law of conservation of mass by reading, and writing while completing notes and activity. 1 Starter 2. Activity

3. Label the parts of the equation Chemical Formula Coefficient subscript yields Element

4. Table of Contents Date Lecture/ Activity/ Lab Page 9/25 Metal, Nonmetals, and Metalloids 41-42 9/26 Where’s Al? 43-44 9/27 Element Wanted Poster 45-46 9/30 Bohr Model Challenge 47-48 10/1 Periodic Table Notes/Puzzles 49-50 10/2 Periodic Table Chart 51-52 10/3 Test Review 53-54 10/8 Test Corrections 55-56 10/9 Molecules, Compounds, and Elements 57-58 10/10 Build a Molecule Activity 59-60 10/15 Counting Atoms 61-62 10/16 Counting Atoms with Coefficients 63-64 10/17 Writing Chemical Formulas 65-66 10/18 Physical and Chemical Changes/Properties Notes 67-68 10/21 Chemical Equations and the Conservation of Mass 69-70 10/22 Balancing Equations 71-72 10/24 Beady Balance 73-74 10/25 See Saw Poster 75-76 • Oct 28 Signs of a Chemical change 77-78

5. Signs of a Chemical Change Gas Formation Energy Change Color Change Sound/ light Precipitate

6. PRECIPITATEFormation of a Solid • A precipitate is a solid formed in a chemical reaction that is different from either of the reactants.

7. ENERGYTemperature Change When two substances are combined, any increase or decrease in temperature is a sign of a chemical change. The temperature may change very suddenly or occur over a long period of time. If the temperature rises and gives off heat, the reaction is said to be exothermic. A drop in temperature indicates that the reaction is endothermic.

8. COLOR CHANGE • A reaction has occurred if two solutions are mixed and there is a color change that is not simply the result of a dilution of one of the reactant solutions.

9. . SOUND/ LIGHT When a substance is altered, light and sound indicate quick changes in temperature. A fireworks display is a good example of the presence of light and sound during a chemical reaction.

10. BUBBLESGas Formation • If the reaction between two liquids or a solid and a liquid gives off gases, it is likely that a chemical change has occurred. Small bubbles that form inside the liquid underneath the surface are enough to indicate a chemical reaction is taking place.

11. Remember IT! Please Excuse Coughs Sneezes and Burps P- Precipitate- Solid formation E- Energy Change-Temperature C- Color Change S- Sound/ Light B- Bubbles- Gas Formation

12. Spooky Video Quiz Describe how you know that a chemical reaction is happening.

13. What clues helped you determine your answer? • Dragon Breath 2. Genie in a bottle 3Pumpkin Brains 4. Instant Worms Self Carving Pumpkin Liquid Light

14. 77 Balancing Equations 78 Balancing Equations 9/26/11 10/28/2013 10/28/2013 • Practice/Application/Connection/ • Paste Notes/Quiz here when graded: • Exit: • In the following equation, the elements are rearranged to form new products. What should be placed in the box to the right? • C+ O2 Starter: Label the parts of the equation: