Question

understanding concepts

1. what is \corrosion\?
2. how is an oxide formed?
3. describe two processes that form two different oxides.
4. make a poster describing three ways to protect a metal from corrosion.

Explanation:

1. Corrosion is a natural process by which metals are deteriorated due to a reaction with their environment, often involving oxidation.
2. An oxide is formed when a substance reacts with oxygen. For metals, this is a common oxidation - reduction reaction where the metal loses electrons and oxygen gains them.
3. Combustion of a metal in pure oxygen forms a metal oxide quickly and exothermically. For example, magnesium burns in oxygen to form magnesium oxide. Rusting is a slower process where iron reacts with oxygen and water in the air to form iron oxide (rust).
4. Three ways to protect a metal from corrosion are: painting, which creates a barrier between the metal and the environment; galvanizing, which coats the metal with a more reactive metal like zinc that will corrode preferentially; and using corrosion - inhibiting chemicals that can slow down the oxidation process.

Answer:

1. Corrosion is the deterioration of metals due to environmental reactions, often oxidation.
2. An oxide is formed when a substance reacts with oxygen through an oxidation - reduction reaction.
3. Combustion (e.g., magnesium in oxygen) and rusting (iron with oxygen and water).
4. Painting, galvanizing, using corrosion - inhibiting chemicals.