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Definition
| one or two letters from an element’s name |
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Definition
| the smallest fundamental particle of an element that has properties of an element |
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Definition
| the basic unit of a molecular compound, which is two or more atoms held together by covalent bonds |
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Definition
| the force that bonds two atoms together by a shared pair/pairs of electrons |
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Definition
| the electrostatic force holding the positive and negative ions |
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Definition
| a compound composed of discreet molecules |
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Definition
| compounds containing positive and negative ions |
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Term
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Definition
| a theory first proposed by John Dalton in 1803 that holds that the basic components of matter are atoms |
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Term
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Definition
| formulas written so that the order and arrangement of specific atoms are shown |
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Definition
| the symbols of the elements and the number of atoms each element that make up a compound |
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Definition
| the forces of attraction between unlike charges and of repulsion by like charges |
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Definition
| an atom/group of covalently bonded atoms that has a net electric charge |
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Term
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Definition
| ions with positive charge |
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Definition
| ions with negative charge |
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Definition
| a group of ions covalently bonded to each other that have a net electrical charge |
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Term
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Definition
| a negatively charged particle in an atom with a comparatively small mass |
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Definition
| a particle in the nucleus with a mass of about 1 amu and a charge of +1 |
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Definition
| a particle in the nucleus with a mass of about 1 amu and no charge |
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Definition
| the core of the atoms containing neutrons, protons and most of the mass |
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Term
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Definition
| the number of protons in the nuclei of the isotopes of a particular element |
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Term
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Definition
| the number of nucleons (neutrons and protons) in an atom |
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Definition
| atoms having the same atomic number but different mass numbers |
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| the language of chemistry |
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Definition
| a hard, lustrous element that are malleable and ductile (can be pounded into sheets and made into wires) |
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Definition
| gases or soft solids that do not conduct electricity |
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Definition
| the chart invited in 1869 by Mendeleev that groups the elements |
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Term
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Definition
| the properties of elements are periodic functions of their atomic numbers |
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Definition
| horizontal rows of elements in the table |
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| groups of elements that fall into vertical columns |
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Definition
| the family of elements that are chemically unreactive and exist as individual atoms |
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Definition
| chemically reactive metals with a plus or minus 2 charge, found in the earth, minerals |
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| nonmetals that have a plus or minus 1 charge, very reactive |
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| based on transition of charge, almost all solid |
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Term
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Definition
| known also as lanthanides |
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Definition
| elements on the borderline that have properties and are intermediate between metals and nonmetals |
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Definition
| an ionic compound formed by the combination of a cation with an anion |
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Definition
| and acid made up of hydrogen plus one other element |
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Term
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Definition
| the common property of forming H+ in aqueous solution |
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