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Decomposition Reactions

Decomposition Reactions. By: Tori, Natalie, and Kaitie. Decomposition Reactions. Decomposition reaction- when a single compound is broken down into two or more products. Most decomposition reactions require energy in the form of heat, light, or electricity.

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Decomposition Reactions

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  1. Decomposition Reactions By: Tori, Natalie, and Kaitie

  2. Decomposition Reactions Decomposition reaction- when a single compound is broken down into two or more products Most decomposition reactions require energy in the form of heat, light, or electricity. Instead of building up it breaks down. (always have one compound)

  3. Refresher BALANCING CHEMICAL EQUATIONS: H2(g) + O2(g) = H20(l) Hydrogen is balanced but oxygen isn't. If you put a coefficient of 2 in front of H2O, the oxygen becomes balanced, but now the hydrogen is not. To fix this, put a coefficient of 2 in front of the H2. 2H2 + O2 = 2H2O

  4. To Balance Decomposition Reactions… A decomposition reaction always begins with one compound. Identify the elements in the compound. Write the chemical formula on one side of the arrow and the products on the other Balance the equation (remember HONClBrIF) Skeleton Equation: Al2S3Al + S Balanced Equation: Al2S3 2Al + 3S

  5. Now, Let’s try it! Skeleton equation: NaCl Na + Cl2 Balanced equation: 2NaCl 2Na + Cl2

  6. Chlorate Decomposition (*note: M stands for metal) Chlorates are compounds formed between a metal and the chlorate ion. Detailed explanation MClO3 MCl2 +O2

  7. Chlorate Decomposition Practice KClO3 KCl + O2 2KClO3 2KCl + 3O2

  8. Carbonate Decomposition (*note: M stands for metal) Carbonates are compounds formed between a metal and the carbonate ion Detailed Explanation MCO3 MO + CO2

  9. Carbonate Decomposition Practice Na2CO3 Na2O + CO2

  10. Homework Question Write the skeleton equation for the decomposition of this compound, then balance it. HCl

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