1. chemistry

2. Types of Chemical Reactions
11.2
Types of Chemical Reactions
The heat and smoke of burning charcoal are the products of a combustion reaction. Combustion is one of the five general types of chemical reactions. If you can recognize a reaction as being a particular type, you may be able to predict the products of the reaction.

3. Classifying Reactions
11.2
Classifying Reactions
Classifying Reactions
What are the five general types of reactions?

4. Classifying Reactions
11.2
Classifying Reactions
The five general types of reaction are combination, decomposition, single- replacement, double-replacement, and combustion.

5. Classifying Reactions
11.2
Classifying Reactions
Combination Reactions
A combination reaction is a chemical change in which two or more substances react to form a single new substance.
When ignited, magnesium ribbon reacts with oxygen in the surrounding air to form magnesium oxide, a white solid. This is a combination reaction. Observing Why do you think this reaction was once used in flashbulbs for photography?

6. Combination Reaction
The general form for a combination reaction is: A + B  AB The reaction in the Magnesium Oxide Laboratory was a combination reaction.

8. for Conceptual Problem 11.4
Problem Solving Solve Problem 14 with the help of an interactive guided tutorial.
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9. Classifying Reactions
11.2
Classifying Reactions
Decomposition Reactions
A decomposition reaction is a chemical change in which a single compound breaks down into two or more simpler products.
When orange-colored mercury(II) oxide is heated, it decomposes into its constituent elements: liquid mercury and gaseous oxygen. Comparing and Contrasting How are the two reactions pictured so far similar? How are they different?

10. The general form for a decomposition reaction is: AB  A + B

12. Chemical Explosives
Chemical explosives work by rapidly burning and producing large amounts of hot gas. Hot gases expand rapidly and applies pressure. Explosives work rapidly because they already contain the oxygen they need for the combustion reaction.

13. Chemical Explosives
Dynamite contains nitroglycerin which is C3H5(ONO2)3 The carbon and hydrogen form carbon dioxide and water and the nitrogen is released as a gas. Nitroglycerine is a very unstable liquid. Dynamite is made by soaking and absorbent material in nitroglycerin, and in the process making it much more stable.

14. Seattle Kingdome Demolition

15. for Conceptual Problem 11.5
Problem Solving Solve Problem 15 with the help of an interactive guided tutorial.
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16. Classifying Reactions
11.2
Classifying Reactions
Single-Replacement Reactions
A single-replacement reaction is a chemical change in which one element replaces a second element in a compound.
The alkali metal potassium displaces hydrogen from water and forms a solution of potassium hydroxide in a single-replacement reaction. The heat of the reaction is often sufficient to ignite the hydrogen. Inferring Why are alkali metals stored under mineral oil or kerosene?

17. Classifying Reactions
11.2
Classifying Reactions
The activity series of metals lists metals in order of decreasing reactivity.

18. Single Replacement Reactions
The general form for a single replacement reaction is: AB + C  AC + B The reaction in the demonstration where copper replaced silver (before the very first lab) was a single replacement reaction.

21. for Conceptual Problem 11.6
Problem Solving Solve Problem 17 with the help of an interactive guided tutorial.
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23. Classifying Reactions
11.2
Classifying Reactions
Double-Replacement Reactions
A double-replacement reaction is a chemical change involving an exchange of positive ions between two compounds.
Aqueous solutions of potassium carbonate and barium chloride react in a double-replacement reaction to form the white precipitate barium carbonate. Potassium chloride, the other product of the reaction, remains in solution.

24. Double Replacement Reaction
The general form for a double replacement reaction is: AB + CD  CB + AD The reaction in the demonstration where I mixed two clear liquids and got a bright yellow precipitate (before the very first lab) was a double replacement reaction.

25. Double Replacement Reaction
A double replacement reaction will have one of three possible products
An insoluble solid (precipitate).
A gas will be evolved.
Water will be formed.
These products drive the double replacement reaction to form the products.

27. for Conceptual Problem 11.7
Problem Solving Solve Problem 18 with the help of an interactive guided tutorial.
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29. Classifying Reactions
11.2
Classifying Reactions
Combustion Reactions
A combustion reaction is a chemical change in which an element or a compound reacts with oxygen, often producing energy in the form of heat and light.
Methane gas reacts with oxygen from the surrounding air in a combustion reaction to produce carbon dioxide and water. Inferring What else is produced in this reaction?

30. The general form for a combustion reaction is: AB + O2  CO2 + H2O
Combustion reactions
The general form for a combustion reaction is: AB + O2  CO2 + H2O

32. for Conceptual Problem 11.8
Problem Solving Solve Problem 21 with the help of an interactive guided tutorial.
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33. Predicting the Products of a Chemical Reaction
11.2
Predicting the Products of a Chemical Reaction
Predicting the Products of a Chemical Reaction
How can you predict the products of the five general types of reactions?

34. Predicting the Products of a Chemical Reaction
11.2
Predicting the Products of a Chemical Reaction
The number of elements and/or compounds reacting is a good indicator of possible reaction type and thus possible products.

35. Predicting the Products of a Chemical Reaction
Simulation 12
Practice classifying reactions according to reaction type.
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36. Predicting the Products of a Chemical Reaction
11.2
Predicting the Products of a Chemical Reaction
The five types of chemical reactions discussed in this chapter are summarized here.

37. Predicting the Products of a Chemical Reaction
11.2
Predicting the Products of a Chemical Reaction
The five types of chemical reactions discussed in this chapter are summarized here.

38. Predicting the Products of a Chemical Reaction
11.2
Predicting the Products of a Chemical Reaction
The five types of chemical reactions discussed in this chapter are summarized here.

39. Predicting the Products of a Chemical Reaction
11.2
Predicting the Products of a Chemical Reaction

40. Predicting the Products of a Chemical Reaction
11.2
Predicting the Products of a Chemical Reaction
The five types of chemical reactions discussed in this chapter are summarized here.

41. 11.2 Section Quiz.
11.2.

42. 11.2 Section Quiz.
1. What type of reaction is described by the following equation?
6Li + N2  2Li3N
combination reaction
decomposition reaction
single-replacement reaction
combustion reaction

43. 11.2 Section Quiz.
2. Balance the following equation and indicate whether it represents a combustion, combination, or decomposition reaction.
H2SO4  H2O2 + SO2
H2SO4  H2O2 + SO2, combination reaction
H2SO4  H2O2 + SO2, decomposition reaction
H2SO4  2H2O2 + SO2, combination reaction
H2SO4  2H2O2 + SO2, decomposition reaction

44. 11.2 Section Quiz.
3. Predict the missing product in the following unbalanced equation.
Pb(NO3)2 + KOH  KNO3 + ____________
PbOH2
Pb(OH)4
Pb(OH)2
PbOH

45. END OF SHOW