MODULE 2: 1-6

The relationship between chemical reactions and electricity

movement of electrons

involve movement of electrons

X loses electrons

A process in which one substance or molecule is reduced & another is oxidized

Devices that use a chemical reaction to create electricity

Example of Galvanic/Voltaic Cell

positive electrode

negative electrode

Metals that are usually solid

Metals that dissolve in water

Decrease in cell potential caused by the operation of the cell (current flow)

2 Forms of Polarization

Decrease in cell potential, which results from changes in concentrations of the ions in the electrolytic solutions

The rate of redox reaction (electron movement) _____ as it reaches saturation.

The layer of adsorbed atomic hydrogen is said to polarize the cell.

Both concentration and activation polarization ____ the net oxidation-reduction (REDOX) reaction rate.

In corrosion processes, ______ usually has the greater effect.

All metals (except for ___, ____, and ____) exist naturally in combined forms as ___, non-metals, semi-metals.

Metals in combined form are called as ___

Combined forms OCCSS

____ as a process is exactly the reverse of the extraction materials.

___is the deterioration or degradation of a material due to interaction with its environment.

Loss of useful properties due to corrosion