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Types of Reactions and Predicting Products SNC2D.

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Presentation on theme: "Types of Reactions and Predicting Products SNC2D."— Presentation transcript:

1 Types of Reactions and Predicting Products SNC2D

2 Types of Reactions Reactions can be divided into 4 main types: Synthesis Synthesis Decomposition Decomposition Single Displacement/Replacement Single Displacement/Replacement Double Displacement/Replacement Double Displacement/Replacement

3 Synthesis Synthesis: 2 or more reactants combine to form 1 product

4 Synthesis

5 Synthesis e.g.Mg + O 2 -> MgO

6 Synthesis Synthesis: 2 or more reactants combine to form 1 product e.g. 2Mg + O 2 -> 2 MgO

7 Synthesis Synthesis: 2 or more reactants combine to form 1 product e.g. 2Mg + O 2  2 MgO S + Zn  ZnS

8 Decomposition Decomposition: 1 reactant breaks down into 2 or more products

9 Decomposition e.g. H 2 O  H 2 + O 2

10 Decomposition Decomposition: 1 reactant breaks down into 2 or more products e.g. 2 H 2 O  2 H 2 + O 2

11 Decomposition Decomposition: 1 reactant breaks down into 2 or more products e.g. 2 H 2 O  2 H 2 + O 2 KClO 3  KCl + O 2 KClO 3  KCl + O 2

12 Decomposition Decomposition: 1 reactant breaks down into 2 or more products e.g. 2 H 2 O  2 H 2 + O 2 2 KClO 3  2 KCl + 3 O 2 2 KClO 3  2 KCl + 3 O 2

13 Single Displacement Single Displacement: a single element replaces another in a compound

14 Single Displacement Single Displacement: a single element replaces another in a compound e.g. MgBr 2 + Cl 2  MgCl 2 + Br 2 Negative ions replace negative ions!

15 Single Displacement Single Displacement: a single element replaces another in a compound e.g. Fe + CuSO 4 

16 Single Displacement Single Displacement: a single element replaces another in a compound e.g. Fe + CuSO 4  Cu + FeSO 4 And positive ions replace positive ions!

17 Double Displacement Double Displacement: parts of two compounds switch places

18 Double Displacement Double Displacement: parts of two compounds switch places e.g. NaOH + FeCl 3 

19 Double Displacement Double Displacement: parts of two compounds switch places e.g. NaOH + FeCl 3  Fe(OH) 3 + NaCl

20 Double Displacement Double Displacement: parts of two compounds switch places e.g. 3 NaOH + FeCl 3  Fe(OH) NaCl

21 Double Displacement Double Displacement: parts of two compounds switch places e.g. 3 NaOH + FeCl 3  Fe(OH) NaCl Remember that positive ions pair with negative ions.

22 Combustion And remember that there also exist combustion reactions: e.g. the combustion of hydrocarbons like methane CH 4 + O 2  CO 2 + H 2 O


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