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Chemical Reactions Involving Oxygen

Chemical Reactions Involving Oxygen. A chemical change is any change in which a new substance is formed. Evidence: Release of energy as heat and light, change in colour, formation of gas, change in odour, etc. sulfur + oxygen  sulfur dioxide phosphorus + oxygen  diphosphorus pentoxide

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Chemical Reactions Involving Oxygen

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  1. Chemical Reactions Involving Oxygen • A chemical change is any change in which a new substance is formed. Evidence: Release of energy as heat and light, change in colour, formation of gas, change in odour, etc. • sulfur + oxygen  sulfur dioxide phosphorus + oxygen  diphosphorus pentoxide magnesium + oxygen magnesium oxide iron + oxygen  iron(III) oxide

  2. Chemical Reactions Involving Oxygen • combustion: AB + oxygen oxides of A & B synthesis: A + B  C decomposition: AB  A + B single displacement: A + BC  AC + B double displacement: AB + CD  AD + CB

  3. C C C C C C C C C C C C C C C C + O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O Types: Synthesis Example C + O2 General: A + B  AB

  4. + Na Na Cl Cl Types: Decomposition Example: NaCl General: AB  A + B

  5. Hg Hg Hg Hg  + O O O O Types: Decomposition Example 2HgO General: AB  A + B

  6. + +  Cl Cl Cl Cl Zn Zn Cu Cu Types: Single displacement Example: Zn + CuCl2 General: AB + C  AC + B

  7. Ca Ca  + + Mg Mg S S O O Types: Double displacement Example: MgO + CaS General: AB + CD  AD + CB

  8. Chemical Reactions Involving Oxygen • combustion: AB + oxygen oxides of A & B synthesis: A + B  C decomposition: AB  A + B single displacement: A + BC  AC + B double displacement: AB + CD  AD + CB • Part 1 reactions can be described as both combustion and synthesis • Litmus turned red. Non-metal oxides react with water to form acids. • Oxygen (O2). A chemical change. If it were a physical change of state it would keep bubbling until it all evaporated (not turn solid)

  9. Chemical Reactions Involving Oxygen • Single displacement • Decomposition • Synthesis • Double displacement • Single displacement • Double displacement • Combustion (and double displacement?) • This is a decomposition reaction potassiumchloratepotassiumchloride+oxygen For more lessons, visit www.chalkbored.com

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