1. Unit: Chemistry Lesson 3: Metals Essential Questions: 1.) What are the properties of metals? 2.) How are metals classified?

2. Metals Many of the objects around you contain metals. What are the objects that will set off the metal detector?

3. Elements that are good Metals conductors of electric current and heat. They tend to be shiny and bendable.  The majority of elements in the periodic table are metals.

4. Physical Properties Shininess and Luster reflectivity Ability to be rolled into Malleable flat sheets or shapes Ability to be drawn into Ductile long wires

5. Ability of an object Thermal conductivity to transfer heat Ability of an object Electrical conductivity to carry electric current

6. Chemical Properties The ease and speedReactivity in which an element combines or reacts with another substance Sodium reacts strongly with water.

7. The deterioration ofCorrosion metal due to a chemical reaction When iron gates react with oxygen in the air they form rust.

8. How are metals classified? Alkali Metals  Group 1  The most reactive  Found only in compounds  Melt at low temperatures Elements such as lithium, copper, and potassium give fireworks their colors.

9. Alkali Metals

10. Alkaline Earth Metals  Group 2  Harder and denser  Melt at higher temperatures  Not as reactive Calcium compounds are an essential part of teeth and bones.

11. Alkaline Earth Metals

12. Transition Metals  Groups 3-12  Good conductors of heat and electric current  Malleable  Less reactive than metals The gold film on an astronaut's visor protects from the sun.

13. Transition Metals

14. Metals in Mixed Groups  Only some elements in Groups 13-16 are metals. Aluminum Lead

15. Mixed Metals

16. Lanthanides and Actinides  Found in the two rows below the main table.  Row 1- Lanthanides (used to make laser lights)  Row 2- Actinides (many are made in labs) Lanthanides are used to produce laser lights in range finders. It uses a laser beam to determine distance.

17. Lanthanides Actinides

18. Transuranium Elements  Elements that follow uranium in the periodic table.  Particle accelerators are used to create these elements. Particle accelerators are used to make elements.

19. Transuranium Elements