Name Date Period Page

NOVA: Hunting the Elements - Part 1

( http://www.pbs.org/wgbh/nova/physics/hunting-elements.html)

Gold

1. There are unique substances (elements) arranged on an amazing chart that

reveals their hidden secrets to anyone who knows how to read it.

2. Gold has the element symbol of .

3. All athe gold ever mined would fit into a single cube about feet

on a side.

4. Three-quarters of the elements are

5. How much would a 60 pound block of gold be work in dollars?

6. Only a few natural elements hav a greater than gold.

Copper

7. Copper has a symbol of and has an atomic number of .

8. Coppper is found in wires, electronics, computer chips, and building materials.

9. Copper conducts electricty better than any other metal except .

The Alloys

10. When copper is combined with another element, , it makes bronze, the

first manmade metal alloy.

11. Tin has the symbol of and has an atomic number of .

12. In pure metals the atoms are arranged in orderly rows and columns and within each

atom there’s a sea of moving electrons. It’s these free flowing that

make metals conductive.

13. Because copper is soft and is easy to it isn’t right for a bell.

14. Adding copper to tin changes the of the metal.

15. One reason the Liberty Bell may have cracked is because it had to much

in the bronze.

16. If you use an electron microscope, you must zoom in million

times to see an atom.

Atoms of bronze – light colored dots are atoms of Tin while dark colored dots are atoms of Copper.

17. Metals are that have an orderly arrangement of atoms.