2. METALS

3. PHYSICAL PROPERTIES OF METAL  Luster- how shiny an object is. Usually categorized as shiny or dull.

4. Another physical property of metals  MALLEABILITY -the ability to be hammered, pressed or bent into shape w/out breaking.

5. Yes, another physical property of metal.  DUCTILITY - the ability to be pulled or drawn out into a wire.

6. More Physical Properties of Metal  Magnetism - the ability to attract or repel magnetic materials or become magnetic.

7. colorcolor  Metals can be different colors.  This is another physical property.

8. THE FINAL PHYSICAL PROPERTY OF METAL  CONDUCTIVITY - the ability to transfer heat or electricity.

9. CHEMICAL PROPERTIES OF METAL  REACTIVITY- the ease & speed w/ which elements combine or react.  CORROSION- the destruction of a metal when iron is exposed to oxygen.

10. Groups of METALS Alkali Metals Alkaline Earth Metals Transition Metals Mixed-Grouped Metals Lanthanides Actinides

11. ALKALI METALS  Group 1  VERY reactive  Shiny  Soft (you can cut with a knife)  Brainiac Alkali Metals Video Brainiac Alkali Metals Video

12. ALKALINE EARTH METALS GGroup 2 RReactive (not as reactive as group 1) FFairly hard GGray-white GGood conductors of electricity

13. TRANSITION METALS  Groups 3-12  Hard  Shiny  Good conductors of electricity  Form colorful compounds

14. MIXED GROUP METALS  Metals in groups 13-15  Not very reactive

15. LANTHANIDES  Soft  Malleable  Shiny  High conductivity  Used to make alloys

16. ACTINIDES  Some are found naturally.  Others created artificially.  Unstable elements.

17. REVIEW QUESTIONS 1.Give an example of how ductility can be useful? 2.What property of metals led to the use of plastic or wood handles on many metal cooking utensils? 3.What group contains the most reactive metals? 4.What area of the periodic table would you look to find a metal good for coating another metal to protect it from corrosion?

18. ANSWERS 1.Copper’s ductility allows copper to be drawn into wires that carry electricity. 2.Metals are good conductors of heat. Plastic or wood handles, which do not conduct heat, protect hands from the heat. 3.Alkali metals, Group 1 4.Groups 13-15