Chemistry GCSE
Barrier protection
What Barrier protection means in Chemistry GCSE, as defined for AQA.
Definition of Barrier protection
Check what you remember
Read the wording for your board, then hide it and explain Barrier protection in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A coating that stops oxygen and water reaching the metal surface, so corrosion cannot start.
Topics that use Barrier protection
- Corrosion and its prevention (AQA GCSE)
Related terms
- Corrosion resistance
- Surface protection
- Corrosion
- Electroplating
- Galvanising
- Oxide layers
- Reactivity of metals
- Rusting
Using Barrier protection in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Chemistry questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Chemistry GCSE termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge