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Page history last edited by Selena A 7 years, 11 months ago









       Boron                          http://www.chem4kids.com/files/elements/art/005_symbol.gif      http://upload.wikimedia.org/wikipedia/commons/thumb/3/34/Bor 1.jpg/125px-Bor 1.jpg




 What substances contain boron?


Boron is a part of many substance. A few of them include being used as magnets, as a flare, or even triethylborane. Boron is part of neodymium magnets. Neodymium magnets are the strongest permanent magnet. These magnets are found in computer HDDs, CD and DVD players, speakers, mobile phones and so on. Neodymium magnets were created in the year 1892. they were created by General motors and Sunitomo Special Metals. The magnet is formed from neodymium, iron and, boron. (Nd2Fe14B) This creates the tetragonal crystalline structure.







     Since boron has a distinctive green flame it can be used as a flare. The ingredients in flares vary, but they usually contain stontium nitrate, potassium nitrate, or potassium perchlorate. these are mixed with a fuel some examples are charcoal, sulfur, sawdust, aluminum, or magnesium. Flares can be colored by boron.







     Triethlyborane is a substance that was used to ignite the F-1 engines on the Saturn V rocket used by NASA's Apollo programs. The fuel is made up of Carbon, hydrogen, and boron. its chemical formula can be written as C6H15B.

                                                                                                                                                                                    oembed errorPlugin error: This URL is not valid for embedding: http://upload.wikimedia.org/wikipedia/commons/f/f2/Apollo_15_launch.ogg

                                                                                                                                                                               (Watch from 0:21-0:50)

     Interesting Facts on Boron

    ~boron is a metalloid

    ~it was discovered by J. Gay-Lussac and L. Thénard

    ~boron is a solid                                                                                                                        

    ~it has a melting point of 2349K, 2076°C, 3769°F

    ~it has a boiling point of 4200K, 3927°C, 7101°F                                                  

                                                                                                                                                                                                                                                                                                                                (J.Gay-Lussac)                                   (L. Thénard)



http://t1.gstatic.com/images?q=tbn:ANd9GcQy0fOxS2hf1xanqXwKYiMAWGoUvcSoXlqk9fneO_L4ttSgLHZrLA (J. Gay-lussac)

  http://www.google.ca/imgres?q=jl+gay-lussac+and+l.+thenard&um=1&hl=en&client=firefox-a&sa=N&rls=org.mozilla:en-US:official&biw=1116&bih=452&tbm=isch&tbnid=Utx3KdNd2w4spM:&imgrefurl=http://www.nndb.com/people/898/000100598/&docid=gdt-A-zREqoAoM&imgurl=http://www.nndb.com/people/898/000100598/louis-jacques-thenard-1-sized.jpg&w=268&h=300&ei=f5WEUILkJarvygGk94HIBg&zoom=1&iact=rc&dur=233&sig=102882237106960742244&page=1&tbnh=135&tbnw=120&start=0&ndsp=16&ved=1t:429,r:3,s:0,i:78&tx=83&ty=29  (L. Thénard)





     what are atomic numbers?

     ~The atomic number of an element is the number of protons in an atom

     ~Boron has a atomic number 5 (this means that there are five protons in each individual boron atom)




     What is atomic mass?                                                                                                                         

     ~the mass number of an atom is the number of protons plus the number of neutrons.

     ~Boron has an approximate atomic mass of 10.81                                                                                                                                                                          


                                                                                                                                                                                                                          (start watching at 0:30)


















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