Corrosion (paper1) Flashcards
1
Q
What is corrosion
A
When a metal reacts with oxygen
2
Q
What does corrosion do to the metal?
A
Makes it weaker
3
Q
What’s the equation for corrosion
A
Metal + oxygen -> metal oxide
4
Q
What’s the only metal that can rust
A
Iron
5
Q
What do some metals form during corrosion
A
A thin layer of oxide called a tarnish
6
Q
What does a tarnish protect
A
The metal from further oxidation
7
Q
What is a metal that reacts quickly
A
Sodium
8
Q
What’s a metal that reacts slowly
A
Silver
9
Q
What’s a metal that doesn’t react at all
A
Gold
10
Q
What’s the rusting equation
A
Iron+oxygen+water->hydrated iron(|||) oxide
11
Q
How can you prevent rusting
A
Coating it, removing oxygen or moving water using a desiccant
