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IIIIIIIVV Types of Chemical Reactions Ch. 8 – Chemical Reactions.

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Presentation on theme: "IIIIIIIVV Types of Chemical Reactions Ch. 8 – Chemical Reactions."— Presentation transcript:

1 IIIIIIIVV Types of Chemical Reactions Ch. 8 – Chemical Reactions

2 Describing Chemical Reactions n Evidence of a chemical change…  Production of heat and light  Formation of a gas  Formation of a precipitate, a solid product.  Color change

3 Describing Chemical Reactions A+B  AB REACTANTS PRODUCTS

4 Describing Chemical Reactions

5 A. Combination / Synthesis (marriage) n the combination of 2 or more substances to form a compound n only one product A + B  AB

6 Mg(s) + O 2 (g)  MgO(s) A. Combination / Synthesis n Product:  Must be a compound

7 B. Decomposition (divorce) n a compound breaks down into 2 or more simpler substances n only one reactant AB  A + B

8 H 2 O 2 (aq)  B. Decomposition n Products:  Can be elements or compounds H 2 O(l) + O 2 (g)

9 C. Single Replacement (affair) n one element replaces another in a compound n Metal replaces metal n Nonmetal replaces nonmetal A + BC  B + AC

10 Zn(s) + HCl(aq)  C. Single Replacement H 2 (g) + ZnCl 2 (aq)

11 AB + CD  AD + CB D. Double Replacement (Jerry Springer) n ions in two compounds “change partners” n cation of one compound combines with anion of the other

12 Pb(NO 3 ) 2 (aq)+ NaI(aq)  PbI 2 (s)+ NaNO 3 (aq) D. Double Replacement n Products:  Are compounds  Sometimes one of the products is water

13 E. Combustion n the burning of a hydrocarbon to produce heat C x H y + O 2  CO 2 + H 2 O

14 E. Combustion n Products: n During complete combustion the products are CO 2 + H 2 O C 12 H 22 O 11 + 3O 2  9C + 3CO 2 + H 2 O

15 Warm up (practice) Title: Reaction Types Number Page (1-5) 1. 2. 3. 4. 5.

16 1. Cu(s) + 2AgNO 3 (aq)  Cu(NO 3 ) 2 (aq) + 2Ag(s) Single Replacement

17 2. 2 H 2 O(l)  2 H 2 (g) + O 2 (g) Decomposition

18 3. H 2 (g) + Cl 2 (g)  2 HCl(g) Combination / Synthesis

19 4. Pb(NO 3 ) 2 (aq) + K 2 CrO 4 (aq)  PbCrO 4 (s) + 2KNO 3 (aq) Double Replacement

20 5.Combustion C 2 H 6 + O 2  CO 2 + H 2 O


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