Periodic Table
• Looking at the element symbols, see if you can spell your names.
• What other words (keep it clean) can you make using the symbols?
• This is a challenge to see which group is able to come up with the most words that others do not!
Use the K12 Periodic Table of
Elements app
How is the Periodic Table organized?
• By atomic number, the number of protons
• In columns called groups or families– The family names are given
• In rows called periods– The table shows seven different periods
Periodic Law
• With the elements arranged by atomic number, their chemical and physical properties are found to show a repeating, or periodic, pattern.
• Elements within a family have similar properties.
Why are there two rows detached at the bottom?
The periodic table skips from 56 – 72 because the inner transition metals have been cut out. The periodic table shown above does fit on a single piece of paper, however the boxes are too small to write the element names in them.
Why do some symbols not align with the name?
• These elements symbols come from their Latin names.1. mercury, Hg hydragyrum2. sodium, Na natrium3. potassium, K kalium4. iron, Fe ferric5. copper, Cu cupric6. tungsten, W wolfram7. antimony, Sb stibium8. silver, Ag argentum9. tin, Sn stannum
10.gold, Au aurum
How does the periodic table classify the elements?
The staircase on the right side of the table is the dividing line between the metals and nonmetals.
The metalloids are on the staircase.
Homework
• Element quiz on Friday – do the practice quiz online.
• Explore the Interactive PT• http://employees.oneonta.edu/viningwj/s
ims/periodic_table.html
• Complete the quiz online to review the concepts we have learned today.– I can read the periodic table.