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30 Cards in this Set
- Front
- Back
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Nucleon |
The term for any particle in the nucleus of an atom is a _______. |
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Electron |
Which subatomic particle has the greatest effect on the chemical reactivity of an atom? |
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Atomic number |
The number of protons in the nucleus. |
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Isotopes |
Atoms of the same element with different atomic mass numbers. |
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Molecules |
Groups or clusters of atoms held together by means of chemical bonding. |
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Degasification |
The process used to reduce the gas concentration of the primary coolant in PWR plants. |
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Atomic mass nimber |
The sum of the total # of protons and the total # of neutrons in an atom |
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Avogadro’s number |
The number of an element’s atoms contained in the number of grams equivalent to the atomic weight of the element |
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Covalent bond |
A bond in which atoms share paired electrons and form overlapping electron shells |
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Mole |
The quantity of a pure substance that contains 6.022 x 10^23 (Avogadro’s number) of that substance. |
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Salt |
A compound composed of positive and negative ions held together with an ionic bond |
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Oxidation number |
A measure of the electric charge that an atom or group possesses |
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Van der Waals force |
Attractions between the molecules of non polar covalent substances |
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Ionic bond |
Formed when one or more electrons are wholly transferred and opposing charges hold the elements together |
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Polar covalent bond |
Paired electrons are not shared equally, creating a positive pole and negative pole of the bond |
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Law of Conservation of Mass |
Total mass of the products equals the total mass of the reactants |
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Law of Definite Properties |
A chemical compound always contains the same elements in the same proportions by mass |
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Law of Multiple Proportions |
If two elements combine to form more than one compound, the masses of one of the elements combining with a fixed mass of the other are in a simple ratio to one another |
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Cation |
The positively charged particle in an ionic bond |
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Anion |
The negatively charged particle in an ionic bond |
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Nonpolar covalent bond |
Electron pairs are shared equally between atoms |
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Metallic bond |
Stable configuration formed by an atom sharing electrons with many other atoms |
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Acid |
Produces H+ (hydrogen ions) when dissociated in water |
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Electrolytes |
Substances that form ions when they are dissolved in water |
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Base |
Forms OH- (hydroxide) ions in water solutions |
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Alkalies |
Certain solvable salts that combine with acids to form neutral salts |
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Regeneration |
The chemical treatment of a resin bed |
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Crud burst |
Corrosion products breaking free into the primary system |
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Fluorine |
Controlled to protect cladding against corrosion |
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Chemisorption |
Formation of a monomolecular layer of a compound between the metal’s surface atoms. |
