1. Unit: Chemical Reactions Types of Chemical Reactions: Synthesis and Decomposition Day 4 - Notes

2. After today you will be able to… Identify synthesis and decomposition reactions Predict the products in words for synthesis and decomposition reactions

3. Types of Chemical Reactions 1.Synthesis 2.Decomposition 3.Single Replacement 4.Double Replacement 5.Combustion

4. Predicting Products 1.Synthesis: Two elements combine to form a compound Common form: Element + Element  Compound A + B  AB

5. Examples of synthesis: sodium + chlorine  magnesium + phosphorus  sulfur + aluminum  sodium chloride magnesium phosphide aluminum sulfide (Metal) (Non-metal) (Metal) (Non-metal)

6. Predicting Products 2. Decomposition: A compound breaks down into elements and/or smaller compounds Common form: Compound  Element + Element AB  A + B

7. Examples of decomposition: potassium nitride  potassium + nitrogen Go back to the non-metal’s original ending.

8. Examples of “special” decompositions: 1. Example of a metal chlorate decomposition: barium chlorate  barium chloride + oxygen metal chlorate  metal chloride + oxygen Always a part of the product! (ClO 3 ) -1

9. Examples of “special” decompositions: 2. Example of a metal carbonate decomposition: potassium carbonate  potassium oxide + carbon dioxide metal carbonate  metal oxide + carbon dioxide Always a part of the product! (CO 3 ) -2

10. Examples of “special” decompositions: 3. Example of a metal hydroxide decomposition: tin (IV) hydroxide  tin(IV) oxide + water metal hydroxide  metal oxide + water Always a part of the product! (OH) -1 Don’t forget the Roman numeral!