Transition elements

Transition elements are found

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