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SUBATOMIC PARTICLES https://www.youtube.com/watch?v=FSyAehM dpyI&list=PL8dPuuaLjXtPHzzYuWy6fYEaX9 mQQ8oGr Types of Particles • Protons: positively charged particles (1 atomic mass unit) • Neutrons: neutrally charged particles (without charge/ 1 amu) • Electrons: negatively charged particles (too small to include in mass) Symbols and location: • (p+) and (n0) are found in the nucleus of the atom • (e-) swarm about the nucleus in a cloud • The number of protons = the number of electrons • p+ = e- Draw and lable this: Number of protons; Identifies element Number of protons + neutrons; Does not ID the element Atomic Charge • When the number of protons and electrons are equal the atom has no charge • (p+) = (e-) the atom has no charge • A charge indicates the gain or loss of electrons. • Add an (e-) = a negative charge • Take away an (e-) = a positive charge