domingo, 10 de abril de 2011

Vocabulary 2

Elements:a substance that cannot be broken down any further into anything simpler.





Atom:the smallest particle of an element that have the same chemical property as the element.





Nucleus:an atom dense center,where most of its mass is.





Electrons:a negatively charge particle that moves around an atom,s nucleus.





Proton:a possitively charge particle inside an atoms nucleus.





Neutron:a particle with no charge inside a atoms nucleus





Atomic Number:the number ofd protons in an atom.





Metal:any of a group of elements that cunduct heat and electricity,is shiny and bendable.

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