Chem reactions

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Chem reactions

  1. 1. Today in Chemistry You will need: 1) Pencil/Pen, Colored Pencils, Markers or Highlighters (4 colors) 2) Bill Nye: Chemical Reactions Handout – Bookshelf 1 page 1 side 3) Any missing work you owe me
  2. 2. Reminders 1) Test #3 Retakes/Takes – End next Wednesday 2) Progress Notice to be passed out Next Wed – Please check grades for accuracy 3) Any missing work you owe me should be turned in by tomorrow so I can grade it over the weekend.
  3. 3. Chemical Reactions CHANGE THE IDENTITY of a substance. This means that the starting substances are NOT chemically the same after interacting.
  4. 4. Type of Reaction Definition  Equation Synthesis Decomposition Single Replacement Double Replacement Watch the movie and then complete the chart. A = Red B = Blue C = Green D = Yellow A + B → AB AB → A + B AB + C → AC + B AB + CD → AC + BD Two or more elements or compounds combine to make a more complex substance Compounds break down into simpler substances Occurs when one element replaces another one in a compound Occurs when different atoms in two different compounds trade places
  5. 5. Identifying Chemical Reactions ____ P + O2 → P4 O10 ____ Mg + O2 → MgO ____ HgO → Hg + O2 ____ Al2O3 → Al + O2 ____ Cl2 + NaBr → NaCl + Br2 ____ H2 + N2 → NH3 2. Use colored pencils to circle the common atoms or compounds in each equation to help you determine the type of reaction it illustrates. Use the code below to classify each reaction. S = Synthesis D = Decomposition SR = Single Replacement DR = Double Replacement  
  6. 6. Homework 1) Anything you may still owe me 2) Bill Nye: Chemical Reactions Handout – Bookshelf 1 page 2 sides – Due tomorrow at the end of the period.
  7. 7. Homework 1) Anything you may still owe me 2) Bill Nye: Chemical Reactions Handout – Bookshelf 1 page 2 sides – Due tomorrow at the end of the period.

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