# Chemical Reaction Lab Report

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Introduction Chemical reactions are how new forms of matter are made. While nuclear reactions also may produce new matter, nearly all the substances you encounter in daily life are the result of chemical changes. Chemical reactions help us understand the properties of matter. By studying the way a sample interacts with other matter, we can learn its chemical properties. These properties can be used to identify an unknown specimen or to predict how types of matter might react with each other. By observing chemical reactions, we are able to understand and explain how the natural world works. We have discussed a lot of reactions. Like Synthesis, Decomposition, Displacement Reaction and Combustion. But there’s another type of reaction. This reaction…show more content…
Rule #5: The oxidation number of oxygen in a compound is usually –2. If, however, the oxygen is in a class of compounds called peroxides (for example, hydrogen peroxide), then the oxygen has an oxidation number of –1. If the oxygen is bonded to fluorine, the number is +1. Rule#6: The oxidation number of hydrogen in a compound is usually +1. If the hydrogen is part of a binary metal hydride (compound of hydrogen and some metal), then the oxidation state of hydrogen is –1. Rule #7: The oxidation number of fluorine is always –1. Chlorine, bromine, and iodine usually have an oxidation number of –1, unless they’re in combination with an oxygen or fluorine. But, there are some elements that has unknown oxidation numbers. In this case, you will use the algebraic equation. For example: SO4-2 In this case, the oxidation state of sulfur, S, is unknown. But the oxidation number of oxygen, O, is given. Now, let the unknown oxidation number of sulfur be the X. Add the X to the product of the charge of oxygen which is -2 and the subscript of oxygen which is 4. The equation will be equal to the charge of sulfate which is -2. X+ [-2(4)]=