Reactivity Series
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What is the reactivity Series order?
Please Potassium Send Sodium Lions Lithium Cats Calcium Monkeys Magnesium And Aluminium Cute carbon Zebras Zinc Into Iron Terrifically Tin Lovely Lead Hot Hydrogen Countries Copper Signed Silver General Gold Penguin Platinum
Which metals react with cold water?
Calcium and up
Which metals react with steam
Metals higher than hydrogen
What metals react with dilute acid?
Metals higher than hydrogen
How do metals react with water?
Water(l) + metal -> metal hydroxide + hydrogen (effervescence)
How do metals react with dilute hydrochloric acid or sulfuric acid?
metal + acid -> salt + hydrogen
How do metals react with steam?
metal + water(g) -> metal oxide + hydrogen (effervescence)
What are redox reactions?
Reactions where oxidisation and reduction occur simultaneously.
Acronym for gain and loss of electrons
Oxidisation Is Loss Reduction Is Gain (of electrons)
What are reducing agents?
Reducing agents causes something else to be reduced (by removing its oxygen) and gets oxidised itself. The opposite of this would be an oxidising agent.
Under what conditions does iron rust?
When in contact with water and oxygen. Rusted iron is Fe(2)O(3).xH(2)O
What are the methods of preventing iron rusting?
Barrier method Galvanising Sacrificial protection
What is Barrier method?
Barrier method is coating Iron with a layer of something else to stop oxygen/water to touch iron. e.g. paint, oil, grease
What is galvanising?
Galvanising is coating Iron with a more reactive metal. This will both sacrificial protect and coat. This is usually done with zinc
What is sacrificial protection?
This is blocks of a more reactive metal than iron, which are scattered around which protects iron as water and oxygen will react in preference with this metal. This is usually zinc.
What colour is rust
red/brown
What is the effect of salt water on rusting?
Salt water encourages the transfer of electrons which increases the rate of rusting