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Transition elements are found
In the middle block of the periodic table
Physical properties of transition elements
Hard, high melting points, strong and dense
Chemical properties of transition elements
Slow/no reaction with oxygen, water and halogens
Charges on transition metal ions
Form positive ions often with the ability to form more than one ion
Iron ions
Fe2+, Fe3+
Catalyst
A substance that speeds up the rate of a chemical reaction without being used up
Transition metals are good catalysts because
They form more than one ion
Iron catalyses
The haber process
Colours of transition metal compounds
Coloured solids and solutions
Reactivity of transition elements
Less reactive than group 1+2 metals
Corrosion
The gradual wearing away of a metal element due to a chemical reaction
Rust
The corrosion of iron
Colour Copper (ii) oxide
Black
Colour Copper (ii) carbonate
Green
Colour hydrated Copper (ii) sulfate
Blue
Colour Copper (ii) ions in solution
Blue
