ore

(noun)

A type of rock that contains minerals with important elements including metals.

Related Terms

  • Extractive metallurgy
  • Leaching

Examples of ore in the following topics:

  • Electronic Effects

    • Such charges are produced by removing (or adding) electrons from (or to) an object.
    • Atoms or molecules that carry a charge are called ions, and the same principle governs their interactions.Many organic reactions are influenced by a similar factor.
    • Electron deficient species, which may or may not be positively charged, are attracted to electron rich species, which may or may not be negatively charged.
    • Electrophiles: Electron deficient atoms, molecules or ions that seek electron rich reaction partners.
    • Nucleophiles: Electron rich atoms, molecules or ions that seek electron deficient reaction partners.
  • Extractive Metallurgy

    • The grade or concentration of an ore mineral, or metal, as well as its form of occurrence, will directly affect the costs associated with mining it.
    • The process of ore formation is called ore genesis.
    • Then, the minerals need to be separated out of the ore
    • In order to convert a metal oxide or sulfide to a purer metal, the ore must be reduced physically, chemically, or electrolytically.
    • After mining, large pieces of the ore feed are broken through crushing and/or grinding.
  • Alloys

    • An alloy is a mixture or metallic solid solution composed of two or more elements.
    • An alloy is a mixture or metallic-solid solution composed of two or more elements.
    • Partial solutions give two or more phases that may or may not be homogeneous in distribution, depending on thermal history.
    • Partial solutions give two or more phases that may or may not be homogeneous in distribution, depending on thermal history.
    • Alloying a metal involves combining it with one or more other metals or non-metals, which often enhances its properties.
  • Binary Hydrides

    • Hydrides are compounds in which one or more hydrogen anions have nucleophilic, reducing, or basic properties.
    • A hydride is the anion of hydrogen (H−), and it can form compounds in which one or more hydrogen centers have nucleophilic, reducing, or basic properties.
    • The energy carrier NADH reacts as a hydride donor or hydride equivalent.
    • Ionic, or saline, hydride is a hydrogen atom bound to an extremely electropositive metal, generally an alkali metal or an alkaline earth metal (for example, potassium hydride or KH).
    • Interstitial hydrides most commonly exist within metals or alloys.
  • Naming Alkenes and Alkynes

    • Alkenes and alkynes are named similarly to alkanes, based on the longest chain that contains the double or triple bond.
    • Alkenes are hydrocarbons that contain one or more double bonds, while alkynes contain one or more triple bonds.
    • Cis or trans is used to indicate whether higher priority substituents are located on the same or opposite sides of the bond.
    • For multiple double or triple bonds, "di-," "tri-," or "tetra-" can be added prior to the "-ene" or "-yne."
    • Translate between the structure and the name of an alkene or alkyne compound
  • Introduction to Chemical Reactivity

    • Chemical Reaction: A transformation resulting in a change of composition, constitution and/or configuration of a compound (referred to as the reactant or substrate).
    • Reactant or Substrate: The organic compound undergoing change in a chemical reaction.
    • Most (or all) of the reactant molecule is normally incorporated as part of the product molecule.
    • It may be organic or inorganic; small or large; gas, liquid or solid.
    • The portion of a reagent that ends up being incorporated in the product may range from all to very little or none.
  • Reactions of Coordination Compounds

    • In chemistry, a coordination or metal complex consists of an atom or ion (usually metallic) and a surrounding array of bound molecules or anions known as ligands or complexing agents.
    • The ions or molecules surrounding the central atom are called ligands.
    • The central atom or ion, together with all ligands, comprise the coordination sphere.
    • The central atoms or ion and the donor atoms comprise the first coordination sphere.
    • If the ligands around the metal are carefully chosen, the metal can aid in (stoichiometric or catalytic) transformations of molecules or be used as a sensor.
  • Occurrence of Metals

    • The others usually occur as isolated pockets where a natural chemical process reduces a common compound or ore of the metal.
    • This leaves the pure metal behind as small flakes or inclusions.
    • The aim of making alloys is generally to make the metals less brittle, harder, or more resistant to corrosion, or to improve their color or luster.
    • After the ore is mined, the metals must be extracted, usually by chemical or electrolytic reduction.
    • When a metal ore is an ionic compound of that metal and a non-metal, the ore must usually be smelted (or heated with a reducing agent) to extract the pure metal.
  • Reaction Rates and Kinetics

    • Nevertheless, evidence for their existence may be obtained by other means, including spectroscopic observation or inference from kinetic results.
    • The potential energy of a reacting system changes as the reaction progresses.The overall change may be exothermic ( energy is released ) or endothermic ( energy must be added ), and there is usually an activation energy requirement as well.
    • As a rule, compounds constructed of strong covalent bonds are more stable than compounds incorporating one or more relatively weak bonds.
    • Electron deficient species or groups, which may or may not be positively charged, are attracted to electron rich species or groups, which may or may not be negatively charged.
    • In many reactions atomic or molecular orbitals interact in a manner that has an optimal configurational or geometrical alignment.
  • Nomenclature

    • CH3(CH2)2CO2C2H5 is ethyl butanoate (or ethyl butyrate).
    • CH3CH2COCl is propanoyl chloride (or propionyl chloride).
    • CH3CONH2 is ethanamide (or acetamide). 2º & 3º-amides have alkyl substituents on the nitrogen atom.
    • Commonly, the oic acid or ic acid ending of the corresponding carboxylic acid is replaced by onitrile.
    • (CH3)2CHCH2C≡N is 3-methylbutanenitrile (or isovaleronitrile).
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