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____ Na + Br 2 → NaBr ____ CuCl 2 + H 2 S → CuS + HCl

____ Na + Br 2 → NaBr ____ CuCl 2 + H 2 S → CuS + HCl ____ HgO + Cl 2 → HgCl + O 2 ____ C + H 2 → CH 4 ____ KClO 3   →   KCl  +  O 2   ____ S 8 + F 2 → SF 6

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____ Na + Br 2 → NaBr ____ CuCl 2 + H 2 S → CuS + HCl

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  1. ____ Na + Br2 → NaBr ____ CuCl2 + H2S → CuS + HCl ____ HgO + Cl2 → HgCl + O2 ____ C + H2 → CH4 ____ KClO3  →   KCl  +  O2  ____ S8 + F2 → SF6 ____ BaCl2   +   Na2 SO4 →     NaCl   +   BaSO4

  2. SPS2 Students will explore the properties of matter

  3. Warm-up: chemical change? (verbal) http://answers.yahoo.com/question/index?qid=20081211161243AAVD87U

  4. Writing equations is a way to describe chemicalreactions. And page 362 workbook Example: NiCl 2 (aq) + 2NaOH(aq)  Ni(OH)2 (s) + 2NaCl (aq)

  5. Just work for the element(s) behind it

  6. A balanced chemical equation has the same number of atoms of each element on both sides of the equation. The balancing process Involves changing coefficients in a reaction.

  7. try your balancing act……. add a coefficient to balance out __Mg(s) + O2 (g)  __MgO(s)

  8. Li (s) + H2O -- LiOH (aq) + H2 (g) We have 1 Li, 2 H and 1 O and 1 Li, 1 O, 3 H ….. not balanced. 2Li + 2H2O 2LiOH + H2

  9. https://sites.google.com/a/parkrose.k12.or.us/chemcom/home/assignments/synthesis-and-decomposition-worksheethttps://sites.google.com/a/parkrose.k12.or.us/chemcom/home/assignments/synthesis-and-decomposition-worksheet

  10. Two or more elements or compounds combine to make a more complex substance A + B → AB AB → A + B Compounds break down into simpler substances Occurs when one element replaces another one in a compound AB + C → AC + B AB + CD → AC + BD Occurs when different atoms in two different compounds trade places A = Red B = Blue C = Green D = Yellow

  11. Identifying Chemical Reactions 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 ____ P + O2 → P4O10 ____ Mg + O2 → MgO ____ HgO → Hg + O2 ____ Al2O3 → Al + O2 ____ Cl2 + NaBr → NaCl + Br2 ____ H2 + N2 → NH3

  12. Balance and determine if synthesis or decomposition ___Ca  +  ___O2  ___CaO  ___H2  +  ___N2  ___NH3 ____H2O2  ___H2O  +  ___O2

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