Chem. Vocab. 326-350
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Oxidation- reduction reaction | Any chemical process in which there is a transfer of electrons, either partial or complete
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| Oxide | A compound usually consisting of oxygen and one other element
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| Oxidizing agent | The atom or ion which takes up electrons during an oxidation
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| Paramagnetism | The property of a substance whereby it is attracted into a magnetic field
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| Paris green | A compound of copper and arsenic
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| Partial pressure | The pressure each gas of a gaseous mixture would exert if it alone were present
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| Peptide | A compound consisting of amino acid groups joined by the peptide linkage
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| Peptide linkage | The (picture) linkage
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| Period | A horizontal row of elements in the periodic table
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| Periodic property | A property of elements that appears periodically when the elements are arragned in order of their atomic numbers
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| Periodic table | A tabular arrangement of the chemical elements based on their atomic structure
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| Petroleum | A liquid mixture of hydrocarbons obtained from beneath the surface of the ground
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| pH | Hydromium ion index; the common logorithm of the reciprocat of the hydronium-ion concentration
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| pH meter | An electronic device for the determination of pH values in solutions
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| pH scale | A logarithmic scale expressing degree of acidity or basicity
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| Photon | A quantum (unit) of electromagnetic radiation energy
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| Photoelectric energy | Ejection of electrons from a surface exposed to light
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| Photosynthesis | The process by which plants produce carbohydrates and oxygen with the aid of sunlight
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| Physical change | A change in which the identifying properties of a substance remain unchanged
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| Physical properties | Those properties that can be determined without causing a change in the indentity of a material
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| Plastic | A natural or synthetic material that can be shaped while soft into a required form and then hardened to produce a durable finished article
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| Polar covalent bond | A covalent bond in which there is an unequal attraction for the shared electrons and a resulting unbalanced distribution of charge
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| Polymer | A compound formed by two or more simpler molcules or radicals with repeating structured units
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| Precipitate | A substance, usually a solid, which seperates from a solution as a result of some physical or chemical change
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| Pressure, critical | The pressure required to liquefy a gas at its critical temperature
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