Fill in the Blanks Atoms Online version Identify the basic characteristics of an atom. by Aaron Stinson 1 same nucleus Atoms negative outside positive neutrons neutron matter proton no element protons are the smallest particles of an that still have the element ? s properties . They are the building blocks of all . Individual atoms are extremely small . At the center of an atom is the . The nucleus , in turn , consists of two types of particles , called and . These particles are tightly packed inside the nucleus . Constantly moving about the nucleus are other particles called electrons . A is a particle in the nucleus of an atom that has a electric charge . All protons are identical . It is the number of protons that gives atoms of different elements their unique properties . A is a particle in the nucleus of an atom that has electric charge . Atoms of an element often have the same number of neutrons as protons . An electron is a particle the nucleus of an atom that has a electric charge . The charge of an electron is opposite but equal to the charge of a proton . Atoms have the number of electrons as protons Adapted from CK12 . or g
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