rust Flashcards
1
Q
What is the chemical name of rust?
A
Iron (III) oxide
2
Q
What are the three methods of rust prevention?
A
galvanizing (putting a layer of zinc on top)
sacrificial protection (putting blocks of zinc on the iron)
barrier methods (greasing, painting, oiling, or putting plastic barrier)
3
Q
How does galvanizing still work after the zinc coating is damaged?
A
Zinc is more reactive than iron, so the water and oxygen react with the zinc first.
4
Q
What is needed for rusting to happen?
A
Water, oxygen
