Friday, February 27, 2009

subatomic Particles

The three main types of subatomic particles are protons, neutrons,electrons.
protons have a positive charge, along with neutrons,are in the nucleus. electrons have a negative charge, also in the nucleus.

Friday, February 20, 2009

into on chemistry

def of chemistry- the sicence of matter the branch of the natural sciences.

fields; organic/inorganic/phsical/bio/analytical/theorctical/matrials/nucler/