Why Chemistry?

3. Olympic gold medals are only make with about 6g of actual gold - what metal makes up the remaining 95%?
5. The use of chemical processes was in use since 1000 BC. Before it was called chemistry, what was known as?
6. What is the hardest substance in your body?
8. In terms of density, what is the heaviest element?
10. What fruit is radioactive?
11. Who created the periodic table?
14. What is the rarest naturally occurring element on Earth?
15. What is the Earth's core made of?

1. The accidental discovery of penicillin in 1928 was the cornerstone of modern medicine, as it led to the introduction of antibiotics. What was the name of Scottish physician who discovered it?
2. What is the name of the chemist Dr. Bunsen Honeydew's redheaded assistant on "The Muppet Show?"
4. What is the most common element in the universe?
7. Where is the majority if the Earth's oxygen produced?
9. When it is frozen, this element turns a glowing red.
12. Guanine, a crystalline material made from ground of fish scales, can be found in what cosmetic product?
13. Who is considered "the father of modern chemistry?"