2 d reactivity series Flashcards
What conditions are needed for rusting
-Oxygen
-Water
What methods are used to prevent rusting
-Barrier methods
-Galvanising
What is sacrificial protection
-Protects iron from rusting
-Iron is covered with a more reactive metal, which undergoes oxidisation
What is the process of galvanising
-Zinc reacts forming Zn 2+
-Its impossible for Fe to form Fe 3+ as Zn donates electrons
What is oxidation
Gain of oxygen
Loss of electrons
What is reduction
Loss of oxygen
Gain of electrons
What is a redox reaction
A reaction where both oxidation and reduction take place
What is an oxidising agent
-The thing that is reduced
-Causes the other substance to gain oxygen and lose electrons
What is a reducing agent
-The thing that is oxidised
-Causes the other substance to lose oxygen and gain electrons
Which elements react violently with acid
Potassium
Sodium
Which elements react with water
Potassium
Sodium
Calcium
Which elements react vigorously with acid
Calcium
Magnesium
Which elements react less strongly with acid
Zinc
Iron
Which elements dont react with acid nor water
Hydrogen
Copper
Which elements react with acid but not with water
Magnesium
Zinc
Iron
