The Periodic Table

Quiz

• Write the symbol of the following elements• 1. Lithium• 2. carbon• 3. oxygen• 4. Sodium• 5. Aluminum

Quiz- identify the colored areas of the periodic table on the next slide

What are the different areas of the table?

What are groups and periods

• Why do elements in the same group have similar properties? Like why do all alkali metals blow up in water?

You see trends on the periodic table

Increasing atomic radius vs. large # of protons

Increasing atomic radius

Before we can learn about any more trends we gotta learn a new word

• Maybe two?

What is an ion? How do we write an ion?

Nova about ions here

Electron affinity vs. ionization energy

• Where on the table do elements want electrons really bad and are willing to steal them from anybody?

Exact Definitions

• Electron Affinity- theamount of energy released when an electron is added to a nuetral atom (how much do I want one)

• Electronegativity- a measurement of the attraction of an element for electrons (how good am I at attracting electrons)

• Ionization energy- the energy needed to remove an electron from an element (can I pull off an electron easily)

What is an isotope

• It has a different number of ___________?• Why?______________• What difference does it make?__________• What sentence do we use to memorize this?

Nova isotopes

Ipads and worksheets?

What in the world is average atomic mass?

• Look at the weight on the period table for magnesium

• How many nuetrons does it have?• Why are we rounding?

How do I find the average?

• Carbon has two stable isotopes• Carbon 12 is 98.89% of the total• Carbon 13 is 1.11% of the total• To find the average change the % to a decimal• Multiply the decimal by the weight• Add the two numbers together.

Worksheet Time- ave atomic mass

Day 2 Quiz• 1. What is different between an ion of lithium

and an atom of lithium? • 2. How do you write the symbol for an atom of

calcium? • 3. How do you write the symbol for an ion of

calcium?• 4. Write the atomic symbol for Carbon showing

both the atomic number and mass• 5. Write the atomic symbol for an isotope of

carbon which contains 2 extra neutrons

Nova on the bottom elements

Make t-shirts from the elements

How common are the elements?

• worksheet• Find some videos for this