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5.MA2AtomicModels
atoms, models, electrons
| Term | Definition |
|---|---|
| isotope | forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei; (differ in relative atomic mass but not in chemical properties) |
| valence electron | electrons located in the outer energy level or shell of the electron cloud |
| Bohr's Model | model of the atom that includes all the subatomic particles and their number and location |
| Lewis Dot Model | model of the atom that includes the symbol in the center and then dots around it representing the VALENCE electrons |
| chemical symbol | 1-2 letter representation of an element's name (either first letter, 2 letters of word or Greek/Latin name) |
| ion | charged atom (that has either gained or lost electrons) |
| metal | category of elements on left side of periodic table; shiny, ductile, malleable, and strong |
| non-metal | category of elements on the right side of the periodic table; opposite properties of metals |
| metalloid | category of elements along the "zigzag" between metals and nonmetals; have properties of both |
| group/family | column in the periodic table; shared properties |
| period | row in the periodic table |
| coefficient | in a chemical formula, the number in front of the symbol that tells how many MOLECULES of that compound there are |
| subscript | in a chemcial formula, the SMALL number below telling how many atoms of that particular element are present |
Created by:
jparsons
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