Some properties are listed in the following table. Distinguish between metals and non-metals on the basis of these properties. Properties Metal Non-metals 1. Appearance 2. Hardness 3. Malleability 4. Ductility 5. Heat conduction 6. Conduction of electricity

1. Appearance: Metals are lustrous but non-metals looks dull. 2. Hardness: Metals are hard but non-metals are soft. 3. Malleability:Metal can be beaten into thin sheets but non-metals cannot be beaten into thin sheets. 4. Ductility: Metal can be drawn into wires but non-metals cannot be drawn into wires. 5. Heat conduction: Metals are good conductors of heat and non-metals are poor conductors of heat. 6. Conduction of electricity: Metals are good conductors of electricity but non-metals are poor conductors of electricity. Properties Metal Non-metals 1. Appearance lustrous dull 2. Hardness hard soft 3. Malleability can be beaten into thin sheets cannot be beaten into thin sheets 4. Ductility can be drawn into wires cannot be drawn into wires 5. Heat conduction good conductors of heat poor conductors of heat 6. Conduction of electricity good conductors of electricity poor conductors of electricity

Match the substances gives in Column A with their uses given in column B. A B i. Gold a. Thermometers ii. Iron b. Electric wires iii. Aluminium c. Wrapping foods iv. Carbon d. Jewellery v. Copper e. Machinery vi. Mercury f. Fuel

Gold is a yellow shiny metal and used to make precious ornaments or jewellery. Iron is hard, cheap and easily available, it can withstand wear and tear and used to make machines. Aluminium is cheap, light and readily available, it is also non-reactive hence used to make thin sheets used for wrapping food. Carbon compounds are used as fuel as they burn easily. Copper wires have the least resistance so do not get heated when conducting electricity making them ideal for wires. There is also little loss of current on transmission. Mercury is the only liquid metal silver in colour, it is sensitive to temperature changes so used to measure the same. A B i. Gold d. Jewellery ii. Iron e. Machinery iii. Aluminium c. Wrapping foods iv. Carbon f. Fuel v. Copper b. Electric wires vi. Mercury a. Thermometers