Complete the chart below. Some numbers may be used i Element Symbol Atomic Iron #7 Xe 10 :: Ne :: Fe # # # number Protons Electrons Neutrons 11 #14 :: Neon :: 24 10 7 bers W 10 54 :: 26 :: 28 :: Xenon :: Nitrogen 77 7 :: 30 :: 33 :: 54 :: Neutral (No Charge) Mass number 56 20 108 :: +1 -1 Charge 131 +2 -3 N

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.