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Also known as a synthesis reaction. One kind of frequently occurring combination reaction is the reaction of an element with oxygen to form an oxide. Under certain conditions, metals and nonmetals both react readily with oxygen. Once ignited, magnesium reacts rapidly and dramatically, reacting with oxygen from the air to create a fine magnesium oxide powder.
An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron. Redox reactions are common and vital to some of the basic functions of life, including photosynthesis, respiration, combustion, and corrosion or rusting.
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hydrogenH2 + I2 => 2HI C + 2H2 => CH4 3H2 + N2 => 2NH3 View all equations with H2 as reactant
iodineH2 + I2 => 2HI I2 + 2NaBr => Br2 + 2NaI 2Al + 3I2 => 2AlI3 View all equations with I2 as reactant