Redox reactions are also called oxidation-reduction reactions, but are shortened to redox reactions. These reactions transfer electrons from one compound to another. Many different things help the process of redox.

Electrolytes are materials, usually liquids, with ions in them that are electrically conductive. These are also called ionic solutions because they contain a lot of ions, or atoms with more electrons or less electrons than the protons in the nucleus, making the atom have a charge that is not zero. This provides a very good place for oxidation, reduction, or redox to occur.

Redox reactions are when both oxidation and reduction occur in the same series of reactions. Oxidation is when an object receives an electron from another object, and reduction is when an object gives an electron away. In a redox reaction, one object is oxidized and one object is reduced.

One example of redox is rusting of iron. As iron (Fe2) is put into contact with water(H20) in the atmosphere, some of the carbon dioxide(CO2) in the atmosphere combines with the water and makes an excellent electrolyte that helps the redox reactions to occur. When the water hits the iron some of the water separates to its base elements, oxygen and hydrogen, and the oxygen is an oxidation unit, a element or compound that gives up electrons most of the time, and iron is a reduction unit, a element or compound that accepts electrons most of the time, so the oxygen gives some of its electrons to the iron and forms a bond with the iron to make iron oxide(Fe2O3). This is the chemical formula for rust on iron. Similar things happen in other reactions that make other metals rust as well as this one.

Salt bridges serve as a connection between the two reactants in redox reactions. A salt bridge allows electrons to be transferred from one of the reactants to the other reactant. This makes it possible for two objects that are not touching can transfer electrons in redox reactions. This is important to redox reactions because the two reactants do not have to be in contact with each other.

Salt bridges are made by a neutralization of an amine and an acid that forms salt. An amine is an organic compound. It has nitrogen as the key atom and three other atoms that are bonded to the nitrogen. The amines are labeled by how many hydrogen atoms are bonded to the nitrogen. If there is no hydrogen, the amine is a tertiary amine. Salt bridges happen when there is a tertiary amine present. If there is one hydrogen, the amine is a secondary amine. If there are two hydrogen atoms, the compound is called a primary amine. An acid is a compound that donates a positively charged hydrogen atom to other compounds. For a material to be an acid, it must have a pH of six or less. Acids are electrolytes. When a salt bridge is made, there is a negative and positive part to the bridge. This causes a reaction that allows electrons to pass from one side to the other side.

Batteries are power sources that store power in one or typically more than one electrochemical cell. Batteries work by building up electrons in the negative terminal and having a wire or other conductor connect the positive terminal and negative terminal so the electrons can flow to the positive terminal. When the two terminals are connected, the electrons flow from the negative terminal to the positive terminal, taking the easiest way to get to the positive terminal. If there is an electronic devise on the circuit, the path the electrons take, the battery will power what is on the circuit if the battery has the required amount of voltage and amperage needed for the electrical appliance to work. Batteries use the attraction that electrons have toward protons to generate power for electrical appliances.

Electrochemical cells create voltage and current by chemical reactions. The electrochemical cells can be made of many different materials. For example, an electrochemical cell can be made by putting a positive or negative terminal in a liquid electrolyte. To make a battery that works, you must have a positive and negative terminal so there is a path that the electrons from the negative terminal want to take to the positive terminal.

Another example of this is a dry cell battery. This type of battery is made by having a positive terminal and negative terminal with carbon between the two terminals and an electrolyte paste around the outside and an anode around the outside. This type of battery is most commonly used because it is usually much smaller and a lot more convenient.