Chemistry chapter 7

What happens during the Reduction Step

• a substance gains one or more electrons

• the process of creating ions by losing or gaining electrons

• a substance loses one or more electrons

• the ability of a material to allow electrons to flow

What happens in the oxidation step?

• a substance gains one or more electrons

• the process of creating ions by losing or gaining electrons

• a substance loses one or more electrons

• the ability of a material to allow electron flow

The ability of a material to allow electrons to flow

• oxidation

• ionization

• reductiohn

• conductivity

the deterioration of a material resulting from chemical interaction with its environment

• redox reaction

• conductivity

• corrosion

• ionziation

General corrosion

• when two dissimilar metals with different potentials are placed in electrical contact in an electrolyte

• the surface of a metal undergoes a slow, relatively uniform deterioration and removal of metal

• a chemical reaction between the metal and its surroundings

• the corrosion site becomes fixed in a small area and the formation of holes takes place in an otherwise unaffected area

As temperature increases

• The rate of corrosion increases

• The rate of corrosion decreases

As oxygen decreases

• the rate of corrosion increases

• The rate of corrosion decreases

When the pH approaches either a strong acid or strong base

• the corrosion will increase

• the corrosion will decrease

A polished surface

• increases corrosion

• decreases corrosion

Uneven surfaces

• increase corrosion

• decrease corrosion