1. Chapter 6 The Elements and the Table
Notes in packet and color code your periodic table

2. Chapter 6 - The Elements Periodic Table has columns (groups/families)
Periodic table has rows (periods)

3. Chapter 6 - The Elements
Periodic Table is broken up into 4 blocks based on electron configuration

4. Chapter 6 - The Elements
92 natural elements (all after U man-made, also Tc and Pm are man-made)
Groups 1,2 and = representative elements (periodic law applies to them)
Chemical and physical properties recur periodically when arranged by increasing atomic number

5. Similar Properties Elements in a family/group have similar properties
Number & location of valence e- determine chemistry, reactivity and ability to bond with other elements

6. Metals and Nonmetals
Only Metalloids do not belong to either type

7. Metals vs. Nonmetals Metals tend to LOSE e-
metal reactivity increases ↓ a group, and ← a period
Nonmetals tend to GAIN e-
nonmetal reactivity increases ↑ a group and → a period

8. Metals, Nonmetals and metalloids
Shiny when smooth and clean
Solid at room temp.
Good conductors of heat and electricity
Malleable
Ductile
Nonmetals
Generally gases or brittle, dull-looking solids
Poor conductors of heat and electricity
Metalloids
– Have physical and chemical properties of both metals and nonmetals!

9. Alkali Metals: Group 1 Properties: Soft Explodes in water
Combines with halogens to make salts
Lithium used in car batteries and to treat psychosis.
Reactivity of Alkali Metals in water
Alkali Metals

10. Alkaline Earth Metals: Group 2
Properties:
Slightly Soft
High melting point (“earth”)
Never found pure in nature

11. Inner Transition Elements: F-Block
Includes:
Rare-Earth
Transuranic
Lanthanides=very hard to get (used in tech)
Actinides = radioactive

12. Transition Metals: D-Block
Properties:
Very diverse category
Good conductors
Tend to bond to oxygen

13. Metalloids: Flank the Dividing Line
Properties:
Brittleness
Semi-Conductors
Used in electronic devices, alloys, magnets

14. Halogens: Group 17 Properties: Highly caustic Form strong acids
Latin for: salt maker
Properties:
Highly caustic
Form strong acids
React w/ metals to form salts
Halogens video

15. Noble Gases: Group 18 Properties: Inert (except Xe)
Used for coolant in MRI machines
Noble Gases

16. Synthetics: Elements past 92
Synthetic means man-made
Made in Laboratories, Nuclear Bombs
Used in medicine, nuclear power, nuclear bombs

17. Liquids, Solids, Gasses Most elements are solid. Gases Liquids
Synthetics