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Learn to identify and predict products of synthesis and decomposition reactions. Explore different types of chemical reactions, including examples. Improve your understanding of chemical transformations.
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Day 4 - Notes Unit: Chemical Reactions Types of Chemical Reactions: Synthesis and Decomposition
After today you will be able to… • Identify synthesis and decomposition reactions • Predict the products in words for synthesis and decomposition reactions heat Pt
Types of Chemical Reactions • Synthesis • Decomposition • Single Replacement • Double Replacement • Combustion heat Pt
Predicting Products • Synthesis:Two elements combine to form a compound Common form: Element + Element Compound A + B AB heat Pt
Examples of synthesis: (Non-metal) (Metal) (Metal) sodium + chlorine magnesium + phosphorus sulfur + aluminum (Non-metal) sodium chloride magnesium phosphide aluminum sulfide heat Pt
Predicting Products 2. Decomposition:A compound breaks down into elements and/or smaller compounds Common form: Compound Element + Element AB A + B heat Pt
Examples of decomposition: potassium nitride potassium + nitrogen Go back to the non-metal’s original ending. heat Pt
Examples of “special” decompositions: metal chlorate metal chloride + oxygen 1. Example of a metal chlorate decomposition: barium chlorate (ClO3)-1 barium chloride + oxygen Always a part of the product! heat Pt
Examples of “special” decompositions: 2. Example of a metal carbonate decomposition: potassium carbonate metal carbonate metal oxide + carbon dioxide (CO3)-2 potassium oxide + carbon dioxide Always a part of the product! heat Pt
Examples of “special” decompositions: 3. Example of a metal hydroxide decomposition: tin (IV) hydroxide metal hydroxide metal oxide + water (OH)-1 tin(IV) oxide + water Always a part of the product! Don’t forget the Roman numeral! heat Pt