1. Warm Up: November 7, 2013 Atoms are small!
Suppose I offered you one atom of gold (Au) for every second that has passed since the Big Bang.
How much gold would you have?
How much money do you think that much gold would be worth?

2. This is 1.5% of the 1 ounce coin.

3. Now divide that piece of the coin into 3,000 parts and one of those 3,000 parts would be your gold.
It would be worth
about $0.21

4. Average age of the universe: 14,000,000,000 (14 billion) or 1
Average age of the universe: 14,000,000,000 (14 billion) or 1.4 x 1010 years
This would be 4.418x1017 seconds
And that many atoms of gold would have a mass of grams.
Today, the price of gold is $46.21 per gram.
So you tell me what your gold atoms are worth….

5. Correct HW

17. Cool Down
Title: PToE Brace Map
Two elements in that group
The PToE

18. Homework: P. 137 #1a-c & #2a-c Vocab Booklet: Atomic Number
Average Atomic Mass
Period
Group
Isotope
Mass Number

19. Explain Element Cube Project