The formulas shown may or may not show the subscripts and superscripts, depending on the browser the viewer is using. Significant Digits Percent Yields Units of Pressure Chemistry Laws Solids, Liquids, Gases compared Combustion A combustion reaction is when all substances in a compound are combined with oxygen, which then produces carbon dioxide and water. Combustion is commonly called burning. It is an exothermic reaction, which means heat is produced and is easily distinguished.
Combustion occurs predominantly in automobiles, homes, and in factories.
Page Synthesis A synthesis reaction is when there is a combination of two or more substances and a compound results. It is when a compound is broken down into simpler substances, usually through electrolysis. When the compound is broken down, it is broken down into ions rather than atoms, so there will be a charge on the product side of the equation. In a single replacement reaction, there is a rule that is always followed. A metal replaces a metal, or a nonmetal replaces a nonmetal.