Transition Metals Transition Metals are found in the

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Transition Metals • Transition Metals are found in the middle of the Periodic Table.

Transition Metals • Transition Metals are found in the middle of the Periodic Table. • Transition Metal Compounds are coloured e. g. Copper Sulphate is BLUE. Chromium oxide is GREEN. • Transition Metals and their compounds are used as CATALYSTS.

Properties of Transition Metals. • Transition Metals are GOOD conductors of heat. • Transition

Properties of Transition Metals. • Transition Metals are GOOD conductors of heat. • Transition Metals are GOOD conductors of electricity. • Transition Metals can be drawn into wires. • Transition Metals are malleable i. e. can be hammered into shape.

Structure of Metals + - + - + + + - - + +

Structure of Metals + - + - + + + - - + + - +

Atomic Structure of Metals • Metals are CRYSTALLINE. • Structure consists of a regular

Atomic Structure of Metals • Metals are CRYSTALLINE. • Structure consists of a regular arrangement of atoms with a positive charge surrounded by a sea of electrons that are free to move. • These mobile electrons are called DELOCALISED electrons. - +

Explaining Properties of Metals. • Metals can be drawn into wires and hammered into

Explaining Properties of Metals. • Metals can be drawn into wires and hammered into shape because the layers of positive metal atoms can slip over one another without the structure breaking. • When heated the positive metal atoms start to VIBRATE more. The delocalised electrons collide these vibrating +atoms and gain energy and travel through the metal

Why Metals are good conductors of electricity. • When a voltage is applied across

Why Metals are good conductors of electricity. • When a voltage is applied across a metal with a battery there is a flow of electric current (flow of electrons) because the DELOCALISED ELECTRONS are able to move throughout the whole structure. • When heated less current is carried because the atoms get further apart and the delocalised electrons have further to move.