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Balance Chemical Reactions. 3-25-03Kentlake Science Department2 Synthesis Reactions Occur when two or more substances combine to form one compound.

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Presentation on theme: "Balance Chemical Reactions. 3-25-03Kentlake Science Department2 Synthesis Reactions Occur when two or more substances combine to form one compound."— Presentation transcript:

1 Balance Chemical Reactions

2 Kentlake Science Department2 Synthesis Reactions Occur when two or more substances combine to form one compound.

3 Kentlake Science Department3 Problem 1 N 2 + H 2 NH 3 N H

4 Kentlake Science Department4 Problem 2 S 8 + O 2 SO 3 S O

5 Kentlake Science Department5 Problem 3 N 2 + O 2 N 2 O N O

6 Kentlake Science Department6 Synthesis Reactions K + Cl 2 Sb + S 8 Cu + O 2

7 Kentlake Science Department7 Synthesis Reactions Cs + O 2 Ag + O 2

8 Kentlake Science Department8 Single Displacement Reactions Occur when an uncombined element replaces an element that is part of a compound.

9 Kentlake Science Department9 Problem 4 Na + H 2 O NaOH + H 2 Na H O

10 Kentlake Science Department10 Problem 5 Zn + HCl ZnCl 2 + H 2 Zn H Cl

11 Kentlake Science Department11 Single Displacement Reactions Zn + FeCl 3 + Cs +H 2 SO 4 + Fe 2 O 3 + H 2 +

12 Kentlake Science Department12 Single Displacement Reactions Zn + CuSO 4 + Fe + CuSO 4 +

13 Kentlake Science Department13 Decomposition Reaction A complex substance breaks down into two or more simpler substances. 2H 2 O 2H 2 + O 2 AB A + B

14 Kentlake Science Department14 Problem 6 KClO 3 KCl + O 2 K Cl O

15 Kentlake Science Department15 Problem 7 HgO Hg + O 2 Hg O

16 Kentlake Science Department16 Decomposition Reactions Al(OH) 3 + H 2 O CuSO 4 + SO 3 AuCl 3 Au +

17 Kentlake Science Department17 Decomposition Reactions H 2 SiO 3 + H 2 O HNO 3 + H 2 O

18 Kentlake Science Department18 Combustion Reactions A hydrocarbon is a compound containing only carbon and hydrogen. When burned they will combine with oxygen.

19 Kentlake Science Department19 Problem 10 C 7 H 6 O 2 + O 2 CO 2 + H 2 O C H O

20 Kentlake Science Department20 Combustion Reactions CH 4 + O 2 CO 2 + H 2 O C 2 H 6 + O 2 CO 2 + H 2 O C 6 H 12 O 6 + O 2 CO 2 + H 2 O C 2 H 5 OH + O 2 CO 2 + H 2 O

21 Kentlake Science Department21 Double Displacement Reactions An element from each of two compounds switch places.

22 Kentlake Science Department22 Problem 8 BaCl 2 +Al 2 (SO 4 ) 3 BaSO 4 + AlCl 3

23 Kentlake Science Department23 Problem 9 FeBr 2 + K 2 CO 3 FeCO 3 + KBr Note that the subscripts of K and Br have changed in the formulas.

24 Kentlake Science Department24 Problem 9 FeBr 2 + K 2 CO 3 FeCO 3 + KBr Fe Br K CO

25 Kentlake Science Department25 Double Displacement Reactions FeS + HCl NaOH + Al 2 (SO 3 ) 3 NaCl + H 2 SO 4

26 Kentlake Science Department26 Double Displacement Reactions H 2 S + CuSO 4 KCl + Hg 2 SO 4

27 Kentlake Science Department27 Neutralization Reactions Double displacement reactions that involve the reaction between an acid and base

28 Kentlake Science Department28 Neutralization Reactions Mg(OH) 2 +2HCl MgCl 2 +2H 2 O base + Acid salt + water

29 Kentlake Science Department29 Internet References Group work site Balancing Equations Tutorial in Reactions


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