Bell Ringer (Feb 6) Explain why all elements are different from each other. For example, what makes aluminum a different element than silver?
The Periodic Table of Elements (Page 93) Essential Question: Why are the elements on the Periodic Table of Elements arranged the way they are? http://viewpure.com/CEC64Bqeajs?start=0&end=0
How is the Table Organized?
1) Elements increase in atomic number from left to right.
Element Squares Element Name Atomic number Element Symbol Atomic Mass
How is the Table Organized?
2) Groups - Columns of elements that all have similar physical / chemical properties
GROUP 1 (Alkali Metals) Very reactive (explosive) if exposed to water
K Rb https://www.youtube.com/watch?v=HvVUtpdK7xw
GROUP 11 Coinage Metals Softer metals, resistant to oxidation (rust)
Silver Gold Copper
GROUP 18 (Noble Gases) *Non-reactive and glows when heated
http://viewpure.com/Lid8BsbqTDQ?start=0&end=0
The Periodic Table of Elements Essential Question: Why are the elements on the Periodic Table of Elements arranged the way they are?
3) Periods (Rows of elements) - have the same # of electron shells (orbitals)
Period 2
Period 6
3 - Classification of Elements
3 - Classification of Elements A) Metals – shiny, malleable, conductive to heat and electricity
3 - Classification of Elements
3 - Classification of Elements B) Nonmetals – have properties that are opposite of metals (dull, brittle, poor conductors of heat and electricity)
3 - Classification of Elements
3 - Classification of Elements C) Metalloids – has similar properties of metals and nonmetals
The Periodic Table of Elements Essential Question: Why are the elements on the Periodic Table of Elements arranged the way they are?
Conclusion Quick Write – A comparison can be made with the letters of the alphabet and the elements of the Periodic Table of Elements. Explain why.