1. First 20 Elements. By: Cody Price.

2. Hydrogen  Hydrogen is the first element.  It has the mass number of 1.00794.  The atomic number is 1.  Symbol is H.  Hydrogen is the lightest element.  Common uses for hydrogen are..  In welding it is used for a shielding gas.  Companies often use it for cooling rotors in electric power generators.

3. Helium  Helium is the 2 nd element.  Mass: 4.0026  Atomic number: 2  Symbol: He  helium will not burn or react with other elements.  Common uses :  Helps NASA’s shuttles to get into space.  Thermographic cameras(help see through smoke or rubble.

4. Lithium  3 rd element.  Mass : 6.941  Atomic Number: 3  Symbol: Li  Common Uses …  disposable and rechargeable batteries  absorb neutrons in nuclear fusion.

5. Beryillium  4 th element.  Mass: 9.012182  Atomic#:4  Symbol: Be  Common uses:  high-speed aircraft, missiles, space vehicles and communication satellites.

6. Boron  5 th element  Mass: 10.86  Atomic number: 5  Symbol: B  Common use:  used to produce glass and ceramics.  Sir Humphry Davy, Joseph Louis Gay-Lussac and Louis Jacques Thenard first discovered boron in 1808.

7. Carbon  6 th element.  Mass: 12.0107  Symbol : C  Graphite is a form of carbon; is combined with clays to make the ‘lead’ in pencils.  Carbon is the second most abundant element in the human body. The first is Oxygen

8. Nitrogen  7 th element  Mass:14.00674  Symbol: N  Atomic number: 7  Common Uses…  used in annealing stainless steel and other steel mill products  Nitrogen was discovered by David Rutherford in 1772.

9. Oxygen  8 th Element.  Mass: 15.9984032  Symbol: O  Atomic number: 8  Common Uses:  Breathe  frequently used to aid respiration of patients in hospitals.

10. Fluorine  9 th element.  Mass : 18.9984032  Atomic Number: 9  Symbol: F  Common Uses:  Types of fluorides in water sources prevent tooth decay.

11. Neon  10 th Element  Mass: 20.1797  Atomic Number:10  Symbol: Ne  Common uses:  neon advertising signs  high-voltage indicators  Neon was discovered in 1898 by Scottish chemist William Ramsay and English chemist Morris Travers

12. Sodium  11 th element.  Mass: 22.989770  Atomic number: 11  Symbol: Na  Common uses…  sodium vapor is used in lamps for street lighting  table salt  Discovered by: Sir Humphry Davy in 1807.

13. Magnesium  12 th Element.  Mass:24.3050  Atomic number: 12  Symbol: Mg  Common Uses:  used in computers for radio-frequency shielding

14. Aluminum  13 th element.  Mass: 26.981538  Atomic Number: 13  Symbol: Al  Common uses:  Cans And Kitchen Utensils  Danish chemist Hans Christian created it.

15. Silicon  14 th element.  Mass: 28.0855  Atomic Number : 14  Symbol: Si  Common uses…  Lubricants  In medicine for silicon implants.

16. Phosphorus  15 th element.  Mass:30.973761  Atomic number:15  Symbol: P  Common uses:  smoke bombs, tracer bullets  Discovered by German alchemist Henning Brand.

17. Sulfur  16 th element.  Mass: 32.066  Atomic number: 16  Symbol: S  Common uses : Sulphur is a component of black gunpowder.  Sufur is a yellow crystalline solid

18. Chlorine  17 th element.  Mass: 35.4527  Atomic number:17  Symbol: Cl  Common Uses : PVC pipe used to provide safe drinking water, pools.

19. Argon  18 th element.  Mass:39.948  Atomic number: 18  Symbol: Ar  Common uses:electric light bulbs,protective atmosphere for growing silicon.

20. Potassium  19 th element.  Mass:39.0983  Atomic Number: 18  Symbol: K  Common Uses:  fertilizers

21. Calcium  20 th Element!!!!!!!!!!  Symbol: Ca  Mass: 40.078  Atomic number: 20  Common uses:  calcium from limestone is a component of Portland cement  In milk

22. Sources…  http://wanttoknowit.com http://wanttoknowit.com  ClipArt-Pictures  Google Images