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What you need to know: What is a metal? What are the physical properties of metals?

Metals Revision. What you need to know: What is a metal? What are the physical properties of metals? Why are metals useful?. To Do: Make a list of as many metals as possible . . To Do: Complete the Properties of Metals worksheet . .

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What you need to know: What is a metal? What are the physical properties of metals?

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  1. Metals Revision • What you need to know: • What is a metal? • What are the physical properties of metals? • Why are metals useful? • To Do: • Make a list of as many metals as possible 

  2. To Do: • Complete the Properties of Metals worksheet 

  3. All metals are shiny when polished or freshly cut Lustrous Flexible Metals do not break – they bend Ductile Metals can be drawn into wires Malleable Metals can be hammered into sheets Sonorous Metals ring like a bell when hit - they do not make a dull thud Electrical conductor All metals conduct electricity Metals allow energy to flow through them, causing heating Thermal conductor

  4. Which of the following are NOT properties of most metals? strong magnetic high melting point brittle hard

  5. Which is the odd one out? B C A Iron Cobalt Copper D Copper is non-magnetic – iron, cobalt and nickel are magnetic Nickel

  6. Which is the odd one out? B A C Antimony Palladium Arsenic D Palladium is the only metal – the others are non-metals Graphite

  7. Which is the odd one out? A C B Titanium Iridium Aluminium Mercury is liquid at room temperature – the others are solids at room temperature D Mercury

  8. Which is the odd one out? B A C Aluminium Bronze Electrum Aluminium is an element – the others are mixtures of two or more elements D Brass

  9. Which is the odd one out? A B C Sodium Potassium Calcium D Calcium is in Group 2 – the others are in Group 1 of the Periodic Table Lithium

  10. Which is the odd one out? B C A Silver Tin Copper D Tin is only found as a compound – the others often occur naturally as elements Gold

  11. Which is the odd one out? A B C Good Thermal Conductor Sonorous Malleable Only cobalt, nickel and iron are magnetic – the others are properties of most metallic elements D Magnetic

  12. Which is the odd one out? C B A Selenium Calcium Palladium D Selenium is a non-metal – the others are metals Zinc

  13. Which is the odd one out? B C A Iron Thallium Zinc D Thallium is extremely toxic – you need small quantities of the others in your diet to remain healthy Magnesium

  14. Which is the odd one out? B C A Molybdenum Copper Yttrium D Copper has been known since ancient times – the others were discovered in the 18th Century Tungsten

  15. Well done!

  16. Complete the exercise on the Using Metals worksheet in your exercise book Write in full sentences

  17. 1. Saucepans are made of copper, iron, steel or aluminium Metals are good thermal conductors Most metals have high melting points

  18. 2. Electrical wires are made of copper Metals are good electrical conductors Most metals are ductile... ... they can be drawn out into wires Most metals are flexible

  19. 3. Springs are usually made of steel (an alloy of iron) Most metals are flexible

  20. 4. A lot of jewellery is made of gold Metals are lustrous... ... shiny when polished or freshly cut Most metals are ductile Most metals are malleable... ... they can be beaten flat into sheets

  21. 5. Bells are made of bronze (an alloy of copper and tin) or brass (an alloy of copper and zinc) Most metals are sonorous... ... they ring when hit, rather than make a dull thud

  22. 6. The framework of skyscrapers is made of iron or steel girders Most metals are strong Because metals are flexible, buildings with a metal frame have some ‘give’ in them... ... meaning that they survive better during earthquakes Iron and steel are much lighter than brick or stone so metal-framed buildings can be taller than masonry buildings

  23. 7. The filament in light bulbs is made of tungsten Metals are good electrical conductors Most metals have a high melting point (The filament glows because it gets very hot – 2000 to 3000 ˚C)

  24. 8. Saw blades are made of steel Most metals are hard The harder the blade is, the less quickly it goes blunt

  25. 9. Flashing – the joins on roofs are waterproofed with sheets of lead Most metals are malleable... ... so the lead flashing can be moulded to the contours of the roof

  26. 10. The casing on compasses is made of brass or aluminium Most metals are NOT magnetic Only iron, nickel and cobalt (and their alloys) are magnetic If we made the casing of a compass from a magnetic metal it would shield the compass needle from the Earth’s magnetic field... ... so the compass would not work!

  27. Copy and complete the notes below, filling in the blanks • There 92 naturally occurring elements in the _______ Table: • the majority of these elements are ______ • The metals are found on the _____ and the centre of the Periodic Table • Metals share many _________ and chemical properties • _______ is the only metal which is liquid at room temperature • Iron, nickel and ______ are the only elements which are ________ Periodic metals left physical Mercury cobalt magnetic

  28. What you need to know: • What is a metal? • What are the physical properties of metals? • Why are metals useful?

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