Noble Gases- Helium

2. Noble Gases- Helium Discovered in the sun’s spectrum by Edward Frankland and Norman Lockyer in 1868 Named after the Greek word helios, meaning “sun” Isolated on Earth by Sir William Ramsay in 1895 Name and ABC#

3. Helium In a neutral atom, Helium contains 2 protons and 2 electrons Toby 5-15

4. Common Uses of Helium Helium began being used for airships after hydrogen proved to be too flammable Toby 5-15

5. Common Uses of Helium Helium is used to fill balloons because it is not flammable and the helium will eventually leak out of the balloons Tofu Becky 5-15

6. Common Uses of Helium Helium is combined with oxygen to fill air tanks for scuba diving. The helium reduces breathing resistance. Toby 5-15

7. Helium-Interesting Facts While helium is naturally colorless, it appears peach-ish when an electric current passes through it Toby 5-15

8. Helium Crisis Helium is the second most abundant element- however, much of that helium goes into space. Because a large amount of helium is going into space, helium is becoming more expensive. Recently, an enormous amount of helium started escaping from the earth’s crust at Yellowstone National Park. However, it is unlikely the helium can be obtained and available for use. Toby 5-15

9. Noble Gases – Neon Origin- the name “Neon” is derived from the Greek word neos, which means new Protons: 10 Electrons: 10 Discovered by William Ramsay and Morris Travers in 1898 at University College London Emily Lawless, 5-8

10. Common Uses for Neon Neon is mainly used for advertising signs Emily Lawless, 5-8

11. Common Uses for Neon Neon is also used for high-voltage indicators, lightning arrestors, wave meter tubes, and television tubes Emily L awless 5-8

12. Common Uses for Neon When combined with Helium, Neon can be used to make gas lasers Emily-la-ray-ray 5-8

13. Interesting Facts About Neon Neon makes up 0.0018% of Earth’s atmosphere Neon doesn’t have any stable compounds Neon is the fifth most abundant element in the universe, even though it’s relatively rare on Earth Em-a-shay-shay 5-8

14. Physical and Chemical Properties of Noble Gases • Unreactive • Odorless • Colorless • Non-flammable • Have low boiling and melting points compared to other elements Toby and Emily L. 5-15 and 5-8

15. A Bibliographical Bibliography on Our Sources Emsley, John. The Elements: Third Edition. New York: Oxford University Press Inc.,1998. Gray, Theodore. The Elements: A Visual Exploration of Every Known Atom in the Universe. New York: Black Dog and Leventhal Publishers, Inc., 2009. Name and ABC#