Reviewed and discussed the lab dealing with synthesis reactions. Each of the 4 reactions completed in the lab were discussed, and a working definition of a synthesis reaction derived from the reactions. The terms reactants and products, as well as the use of chemical reaction symbols in writing a reaction was discussed. The general formula for a synthesis reaction was written. Using a bottle of hydrogen peroxide as an example, the reason it is stored in a brown, opaque bottle was determined to protect it from light. The reason to protect it was illustrated by showing on the board what happens to the peroxide if exposed to light, it forms oxygen gas. This was related to the lab performed last week, in which hydrogen peroxide was used to produce a bottle of oxygen gas. This type of reaction is called a decomposition reaction, with the definition determined and written. The decomposition of water into hydrogen gas and oxygen gas was shown in a diagram, and labeled as a decomposition reaction. This reaction, called the electrolysis of water will be attempted in our next lab.