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Science Vocab

TermDefinition
Model an example that explains or summarizes a specific concept, method, or object
Atom the smallest unit of matter that maintains properties of its element
Nucleus the center of an atom, which holds protons and neutrons
Proton a type of subatomic particle; has a positive charge
Neutron a type of subatomic particle; has no charge
Electron a type of subatomic particle; has a negative charge
Atomic Number the number located above the element's symbol on the Periodic Table; tells the amount of protons and electrons in the element's isotope
Atomic Symbol/Nuclear Symbol/Chemical Symbol consists of three main parts: an element's symbol, the element's atomic number, and the mass number for its specific isotope
Subatomic Particle the particles found within an atom (protons, electrons, and neutrons)
Molecule the smallest measurable unit of a substance that keeps all physical and chemical properties of said substance
Lewis Structures diagrams that show the bonding between atoms of a molecule and lone pairs of electrons that may also exist in the molecule
Bohr Model an atom model created by Niels Bohr; consists of a small, positively charged nucleus orbited by negatively-charged electrons
Electron Shell the outside portion of an atom surrounding the atom's nucleus
Valence Electron en electron that is most likely to be involved in a chemical reaction
Matter anything that has mass or takes up space
Created by: darbyreneee