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STARTER ACTIVITY • Get into groups of three. • Collect a pack of cards and then look at Mr Carpenter. SNAP/CARD SORT ACTIVITY Bauxite Bauxite Al2O3 Aluminium oxide Aluminium Al ORE ORE Using prior knowledge and information. Give the definitions with examples of the following. • • • • Element Compound Mixture Ore Extension. How can the metals be extracted from its ore ? Rocks and Ores The diagram shows a diagram of an ore Malachite. An ore is a rock which contains a metal compound (mineral) represented by the green crystals in the diagram. The ore is a mixture because it contains substances, which are not chemically bonded together. (Mineral copper carbonate and rock). The mineral copper carbonate is a compound because it contains elements, which are chemically bonded together. The metal copper is extracted from the mineral copper carbonate. The metal is an element because it has the same types of atoms chemically bonded together. Extension – How can the metals be extracted from their minerals? Try to put the elements in order of reactivity using the information below. The most reactive at the top and the least reactive at the bottom. You will have to explain the order you have chosen. Gold and silver were used a long time ago for plates and drinking cups, they have been dug up still in very good condition. Potassium and sodium react extremely vigorously with cold water. Copper replaced Lead for making water pipes because of Lead poisoning. Magnesium, Zinc and Aluminium react very well with steam but not very quickly with cold water. Carbon can be used to extract Zinc from its ore but can not extract Aluminium or Magnesium from its ore. Copper does not react with dilute acid and does not rust. Magnesium, Zinc, Aluminium, Iron react well with dilute acid and produce Hydrogen gas. Over a long period of time Iron rusts a lot quicker than lead. Gold is more expensive than silver. Potassium produces a flame in contact with water. Gold and silver are found native. Plenary Questions • How does the reactivity of the metal effect the ease at which it can be extracted from its mineral? • Why is was gold and silver used as a metal in ancient times? • Why was the bronze age before the iron age?