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05 Notes - Classifying Reactions I

05 Notes - Classifying Reactions I - 4 KCl 2 K Br 2 KBr 3 H...

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Pluchino – Regents Chemistry Atoms, Formuals & Reactions – 05 Classifying Reactions I Aim: How are reactions classified? Do Now: Explain what is happening in this reaction: 2Hg + O 2 2HgO Classifying Reactions Synthesis: two substances react to form a single product – the reactants do not need to be elements! A + B AB Decomposition: One substance breaks down into two simpler substances – the products do not have to be elements! AB A + B Practice: Classify the reaction and balance the chemical equation. 1. ___ KClO 3 ___ KClO
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Unformatted text preview: 4 + ___ KCl 2. ___ K + ___ Br 2 ___ KBr 3. ___ H 3 BO 3 ___ H 4 B 6 O 11 + ___ H 2 O 4. ___ C 2 H 6 + ___ O 2 ___ CO 2 + ___ H 2 O Combustion: Fast reaction involving O 2 and usually a hydrocarbon. Releases substantial energy. C X H Y + O 2 YH 2 O + XCO 2 Conclusions: Synthesis reactions directly combine two substances to make a single product Decomposition reactions start with one reactant that breaks down into two or more products Combustion reactions always produce carbon dioxide and water...
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