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Transcript
Matter Vocabulary Part 4 WORD atom proton neutron electron nucleus Orbit / electron cloud shell atomic mass atomic number element Periodic table DEFINITION Smallest piece of an element that keeps its chemical properties Particle in the nucleus of an atom with a positive charge Particle in the nucleus of an atom with no charge Particle orbiting the nucleus of an atom with a negative charge Dense, central core of an atom (made of protons and neutrons) Path an electron takes around the nucleus A shell is sometimes called an orbital or energy level. Shells are areas that surround the center of an atom. The mass of an atom, equal to the number of protons and neutrons in the nucleus. The number of protons in the nucleus and electrons in the electron cloud One of the basic substances that are made of atoms of only one kind and tha cannot be separated by ordinary chemical means into simpler substances A way to organize and learn all of the elements
