Breakdown of Solid Materials - Session Objectives Quiz

How does the electromotive series relate to the breakdown of solid materials, as mentioned in the objectives?

• It is involved in electrolytic corrosion

• It causes UV damage

• It prevents oxidation

• It increases heat resistance

What is the main reason for metals deteriorating?

• Corrosion

• Melting

• Freezing

• Magnetism

Metals will corrode when exposed to which of the following gases?

• Acid vapours, ammonia gas, gases containing sulphur

• Oxygen, nitrogen, argon

• Carbon dioxide, methane, propane

• Hydrogen, helium, neon

Explain why the corrosion of a metal might stop and the metal becomes passive. Use evidence from the oxidation process to support your answer.

• Because the oxide layer prevents further electron transfer

• Because the metal evaporates

• Because the oxygen supply is unlimited

• Because the metal is magnetic

Which of the following is NOT a process that water can cause over time?

• Erode

• Corrode

• Absorb

• Freeze

How does the location where water collects affect its properties?

• It will absorb and contain a number of substances depending on the location

• It will always remain pure

• It will turn into ice

• It will evaporate immediately

Which term describes water that is aggressive towards copper?

• Plumbosolvent

• Cuprosolvent

• Ferrous oxide

• Denso

A plumber is tasked with preventing rust in a new iron pipe installation. Based on the information provided, which combination of methods would be most effective?

• Painting with red oxide paint and using a chemical inhibitor

• Only using cuprosolvent water

• Bleeding radiators regularly

• Applying copper plating and using plumbosolvent water

Why is low carbon steel (LCS) pipework particularly prone to corrosion in central heating systems?

• It is always exposed to sunlight

• It is used only for cold water systems

• It is unprotected unless an inhibitor is used

• It is made from non-metallic materials

What is the role of water molecules in the process of rust corrosion?

• They act as a catalyst for the reaction.

• They provide an environment for metal atoms to give up electrons.

• They prevent the metal from corroding.

• They remove oxygen from the environment.