Reactivity and extraction of metals Flashcards
1
Q
Reactivity of metals (10)
A
Potassium
Sodium
Lithium
Calcium
Magnesium
Aluminium
Zinc
Iron
Copper
silver
2
Q
Rusting?
A
Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.
3
Q
Oxidation?
A
is the loss of electrons, gain of oxygen or loss of hydrogen.
4
Q
Reduction?
A
is the gain of electrons, loss of oxygen or gain of hydrogen.
5
Q
Redox?
A
When a metal reacts with an acid
6
Q
Oxidising agent?
A
cause oxidation
7
Q
Reducing agent?
A
cause reduction
8
Q
Barrier?
A
stopping the water and oxygen getting to the iron with a barrier of grease, oil, paint or plastic
9
Q
Galvanising?
A
maintain the zinc coating and avoid exposing it to harsh environments
