Oxidation
Oxidation is when a substance chemically combines with what element?
oxygen
What do we call a rock that contains metal elements?
ore
What do we call a list of metals in order from most reactive to least reactive?
reactivity series
What is the most common mineral/ raw material in Iron
Haematites (Fe2O3.)
What is the process used to extract Aluminium?
electrolysis
What is the chemical formula for oxygen gas?
O2
What state of matter is copper sulfate in this reaction:
Mg(s) + CuSO4(aq) --> MgSO4(aq) + Cu(s)
aqueous (dissolved in water)
What does the symbol (aq) stand for?
aqueous (dissolved in water)
What is the reducing agent in the Iron Extraction process for iron oxide?
What is added to Alumina to reduce the melting point?
Sodium aluminium fluoride (Na3AlF6)
What state of matter is the product in this reaction:
2Zn(s) + O2(g) --> 2ZnO(s)
solid
Besides plain iron, what is the product of the reaction between iron oxide and potassium?
potassium oxide
What salt is formed when copper reacts with sulfuric acid?
copper sulfate
As the limestone decomposes, what is the new product?
CaO
Why do the Carbon Anode blocks have to be replaced?
Because they are oxidised
What product is formed when copper reacts with oxygen?
copper oxide
Why is there no reaction between zinc oxide and lead?
What gas is formed when a metal reacts with an acid?
hydrogen
Why does Slag form a separate layer from molten iron and float?
Because it is less dense than molten iron, so it floats and can be 'tapped' off.
What forms on the surface of a clean Aluminium surface when exposed to air?
Invisible Thin Coating of Aluminium Oxide (AlO)
What is the everyday name for iron oxide?
rust
What non-metal element is often used to displace less reactive metals like iron and copper?
carbon
The Romans made water pipes from which nonreactive metal?
lead
What are the three different half equations for Iron?
Fe3+ + 3e- --> Fe Fe3+ + e- --> Fe2+ Fe2+ + 2e- --> Fe
What forms above the Molten Cryolite and Aluminium Oxide?
Sodium aluminium oxide crust