Term
ELEMENTS & COMPOUNDS
Metal |
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Definition
* A shiny, malleable, and ductile element |
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Term
ELEMENTS & COMPOUNDS
Non-Metal
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Definition
* An element with varying properties that are completely different from metals |
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Term
ELEMENTS & COMPOUNDS
Metalloid |
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Definition
* An element with properties intermediate between metals and non-metals |
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Term
ELEMENTS & COMPOUNDS
Malleable |
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Definition
* Able to be beaten or rolled into sheets without crumbling |
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Term
ELEMENTS & COMPOUNDS
Ductile |
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Definition
* Able to be drawn into long thin wires |
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Term
ELEMENTS & COMPOUNDS
Element |
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Definition
* A pure substance that cannot be broken down into other substances |
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Term
ELEMENTS & COMPOUNDS
Compound |
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Definition
* A chemical combination of 2 or more elements in a specific ratio |
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Term
ELEMENTS & COMPOUNDS
Period |
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Definition
* A horizontal row in the periodic table |
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Term
ELEMENTS & COMPOUNDS
Group |
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Definition
* A vertical column in the periodic table; also called family |
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Term
ELEMENTS & COMPOUNDS
Atomic Molar Mass |
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Definition
* The average molar mass of the atoms of an element including isotopes |
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Term
ELEMENTS & COMPOUNDS
Isotope |
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Definition
* An atom of the same element containing a different number of neutrons |
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Term
ELEMENTS & COMPOUNDS
Mass Number |
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Definition
* An integer equal to the total number of protons and neutrons in the nucleus of the atom |
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Term
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Definition
* An electrically charged atom or group of atoms |
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Term
ELEMENTS & COMPOUNDS
Cation |
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Definition
* A positively charged ion |
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Term
ELEMENTS & COMPOUNDS
Anion |
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Definition
* A negatively charged ion |
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Term
ELEMENTS & COMPOUNDS
Valence Electron |
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Definition
*An electron in the outer energy level of an atom |
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Term
ELEMENTS & COMPOUNDS
Octet Rule |
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Definition
* A rule stating that atoms bond in such a way that each valence energy level has eight electrons |
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Term
ELEMENTS & COMPOUNDS
Energy Level |
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Definition
* A region near an atom's nucleus that may be empty or may contain electrons |
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Term
ELEMENTS & COMPOUNDS
Atomic Theory
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Definition
* The study of how subatomic particles are arranged in different atoms and what properties result from the various arrangements |
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