Combustion reactions can only be exothermic. In chemical reactions, old bonds are broken to form new ones. Depending on the energy difference between broken and formed bonds, the total reaction energy is either positive ... More » Science Chemistry

Combustion reactions have a variety of uses including the burning of fuel that provides heat for the home or power for an automobile. Combustion of natural gas or propane gives the heat to cook one's food. Combustion of ... More » Science Chemistry

Synthesis, decomposition, substitution and double displacement are four types of chemical reactions. A synthesis reaction is when two or more reactants combine to form one product. More » Science Chemistry
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Antimony trichloride is a reagent used in chemical reactions that is represented by the chemical formula SbCl3. It is made from one atom of antimony and three atoms of chlorine. More » Science Chemistry

In chemistry, the steady state approximation is an estimation of the value of a chemical equilibrium whereby one variable of the chemical reaction is fixed, or placed as a perceived constant, in order to obtain a mathema... More » Science Chemistry

The purpose of boiling a leaf before testing it for starch is to stop any more reactions from occurring in the leaf. If the processes inside the leaf are not stopped, then the starch could be used and not be picked up in... More » Science Chemistry

Most cold packs utilize water and ammonium chloride or ammonium nitrate to create endothermic reactions. Endothermic reactions require energy and obtain it by absorbing heat from the environment. More » Science Chemistry