Unit 5 Part 2 Types Of Chemical Reactions

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Information about Unit 5 Part 2 Types Of Chemical Reactions

Published on February 4, 2008

Author: shawnschlueter

Source: slideshare.net

Part 2: Types of Chemical Reactions Objectives For this Lesson

Objectives For this Lesson After this lesson you should be able to: 1. Classify a chemical reaction as composition, decomposition, single replacement, or combustion. 2. Predict the products of simple composition and decomposition reactions.

After this lesson you should be able to:

1. Classify a chemical reaction as composition, decomposition, single replacement, or combustion.

2. Predict the products of simple composition and decomposition reactions.

Objectives cont. 3. Use the activity series of metals to produce the products of single replacement reactions. 4. Write the products of the double replacement reaction between two ionic compounds.

3. Use the activity series of metals to produce the products of single replacement reactions.

4. Write the products of the double replacement reaction between two ionic compounds.

5 Types of Reactions Composition (synthesis) Decomposition Single Replacement Double Replacement Combustion

Composition (synthesis)

Decomposition

Single Replacement

Double Replacement

Combustion

Composition (synthesis) Reactions Two or more substances react to form a single substance . These reactions usually result in the release of energy . A+ B AB S + O O O O S

Two or more substances react to form a single substance .

These reactions usually result in the release of energy .

Your Turn Write a balanced chemical equation for the reaction of: solid aluminum with sulfur. Water and dinitrogen pentoxide.

Write a balanced chemical equation for the reaction of:

solid aluminum with sulfur.

Water and dinitrogen pentoxide.

Decomposition Reactions A single substance is broken down into two or more substances. A+ B AB O O C Ca O O Ca + O O C

A single substance is broken down into two or more substances.

Try These Write a balanced chemical equation for the decomposition of: Aluminum oxide.

Write a balanced chemical equation for the decomposition of:

Aluminum oxide.

Single Replacement Reactions One element displaces another element from a compound in a single replacement reaction. A+ BX AX +B Fe + S O O O O Cu S O O O O Fe Cu +

One element displaces another element from a compound in a single replacement reaction.

Activity Series Whether an element will replace another depends upon how active the elements are. A more active element will replace a less active element. See your activity chart to determine which elements are more active than others.

Whether an element will replace another depends upon how active the elements are. A more active element will replace a less active element.

See your activity chart to determine which elements are more active than others.

Solving Single Replacement Reactions Determine what is being replaced, the metals or nonmetals. Look up the elements on your activity series chart, to see if the reaction will take place. Write the complete skeleton equation, and balance it.

Determine what is being replaced, the metals or nonmetals.

Look up the elements on your activity series chart, to see if the reaction will take place.

Write the complete skeleton equation, and balance it.

Your Turn Write balanced chemical equations for the reaction of: Potassium and Zinc Chloride. Chlorine and Hydrofluoric acid. Iron and Sodium phosphate. Fluorine and hydrochloric acid.

Write balanced chemical equations for the reaction of:

Potassium and Zinc Chloride.

Chlorine and Hydrofluoric acid.

Iron and Sodium phosphate.

Fluorine and hydrochloric acid.

Double Replacement Reactions Two ionic compounds exchange cations and anions. Hint: “outsides combine, insides combine ”. AX+ BY AY +BX

Two ionic compounds exchange cations and anions.

Hint: “outsides combine, insides combine ”.

+ + O O N O Ag K Cl Cl Ag O O N O K

Try these Write a balanced chemical equation for the reaction of Lithium iodide and silver nitrate. Barium chloride and potassium carbonate.

Write a balanced chemical equation for the reaction of

Lithium iodide and silver nitrate.

Barium chloride and potassium carbonate.

Combustion Reactions A substance burning in oxygen . Combustion reactions usually involve hydrocarbons . Complete combustion results in the formation of water and carbon dioxide. Incomplete combustion results in the formation of soot and carbon monoxide.

A substance burning in oxygen .

Combustion reactions usually involve hydrocarbons .

Complete combustion results in the formation of water and carbon dioxide.

Incomplete combustion results in the formation of soot and carbon monoxide.

Examples Write a balanced chemical equation for the complete combustion of Propane, C 3 H 8 Write a balanced chemical equation for the incomplete combustion of Propane.

Write a balanced chemical equation for the complete combustion of Propane, C 3 H 8

Write a balanced chemical equation for the incomplete combustion of Propane.

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