Science Definitions

I need short definitions for these words be 4 2morrow.
proton-
neutron-
electron-
nucleus-
atom-
periodic table-
atomic number-


Go to www.dictionary.com. They have all of these words listed.


Example how to find answers using Google:

Word Proton
http://www.google.com/search?as_q=proton&num=10&hl=en&btnG=Google+Search&as_epq=&as_oq=&as_eq=&lr=&as_ft=i&as_filetype=&as_qdr=all&as_nlo=&as_nhi=&as_occt=any&as_dt=i&as_sitesearch=&as_rights=&safe=images

Now you do the rest


Definition of Concentrate


independent variable

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