And here are the answers for the meaning of the names of those elements...

1. Which element is named after the sun?

Helium (Greek: helios = the sun)

2. Which element is named after the moon?

Selenium

3. Which elements are named after four different planets?

Uranium (Uranus), Plutonium (Pluto), Neptunium (Neptune), Mercury

4. Which element means the earth?

Lithium - comes from the Greek: lithos meaning earth - hence the lithosphere part of the Earth is the hard bit surrounded by the atmosphere (the gassy bit)

5. Which element is named after the man who stole fire from the gods in Roman mythology?

Promethium - the man was called Prometheus

6. Which element is named after a US State?

Californium - California

7. Which elements are named after two continents?

Europium, Americium

8. Which element is named after the Greek work meaning "colour"?

Chromium - Greek: chromos = colour

9. Which element is named after the largest asteroid in the solar system?

Cerium - The asteroid is called Ceres

10. Which element is named after the man who discovered the theory of relativity?

Einsteinium - Albert Einstein

11. Which element is named after the man who left his money to use for prizes every year in litreature, Chemistry, Physics, Medicine, Peace and Mathematics?

Nobelium - Alfred Nobel the discoverer of dynamite

12. Which element comes from the Greek word meaning "smelly"?

Bromine - Greek: bromos = very smelly

13. Which element used to be called "brimstone"?

Sulphur - "fire and brimstone" is an olden description of what awaited sinners in Hell

14. Which element is named after the mythological man who was tied down with a sword hanging from a silken thread above his head?

Tantalum - The man was called tantalus and it is where we get the word "tantalising" from

15. Which elements old name was "Azote" meaning "inert air"

Nitrogen - the bit of the air 80% that is unreactive

16. Which element is named after a University in the USA?

Berkelium - Berkeley University

17. Which element is named after the man who first drew the periodic table?

Mendeleevium - Dmitri Mendeleev

18. Which element is named after the giants of mythology?

Titanium - The giants were called the Titans - remember the Titanic?

19. Which element is named after a town in Scotland?

Strontium - from Strontian where it was discovered

20. Which elements are named after a town in Sweden (there are three of them!)?

Erbium, Terbium, Ytterbium all named after the town of Ytterby