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2 points each Match the vocabulary word with the correct definition. 1. Proton a. Particles with no charge found in the nucleus of most atoms. 5. Atom e. Total number of protons and neutrons in the nucleus of an atom. 2. Neutron b. Center of atom. Contains most of the atom’s mass. 6. Atomic Number f. The number of protons in an atom. Also the way the elements are numbered. 3. Electron c. Positively charged particle in the nucleus of the atom. Determines the element. 7. Atomic Mass g. The smallest part of an element. The building block of all things. 4. Nucleus d. Negative particles that are found in the space around the nucleus. 8. Electron Cloud h. The space outside the nucleus where negatively charged particles are found. 5 points 9. Label the information below. 6 points