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Voc. Wk #4 Atoms

QuestionAnswer
nucleus the region in the center of an atom where most of an atoms mas and positive charge is concentrated
matter anything that has mass and takes up space
neutron a neutral particle in the nucleus of an atom
atomic number the number of protons in the nucleus of an atom of an element
atomic mass then number of protons plus the number of neurtrons
pure substance matter with a composition that is always the same
proton the positive particle in the nucleus of an atom
molecule two or more atoms that are held together by a covalent bonds and act as a unit
element a substance that consists of only one type of atom
electron a negatively charged particle that occupies the space in a atom outside the nucleus
atom a small particle that is the building block of matter.
compound substance containing atoms of two or more DIFFERENT elements chemically bonded together
Periodic Table a chart of the elements arranged into rows and columns according to their physical and chemical properties
Created by: jschroeder4
 

 



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