Chemistry (Mass Spectrometer - Mole)

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Mass spectrometer

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An instrument used to measure the precise masses and relative amounts of atomic and molecular ions

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Matter

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Anything that occupies space and has mass; the physical material of the universe

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Matter waves

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The term used to describe the wave characteristics of a particle

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Mean free path

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The average distance traveled by a gas molecule between collisions

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Metal complex

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An assebly of a metal ion and the lewis bases bonded to it

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metallic bond

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Bonding usually in solid metals, in which the bonding electrons are relatively free to move throughout the three-dimensional structure

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Metallic character

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The extent to which an element exhibits the physical and chmical properties characteristic of metals, for example, luster, malleability, ductility, and good thermal and electrical conductivity

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Metallic elements

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Elements that are usually solids at room temperature, exhibit high electrical and heat conductivity, and appear lustrous. Most of the elements in the periodic table are metals

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Metallic hydrides

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Compounds pormed when hydrogen reacts with transitions metals; these compounds contain the hydride ion, H-

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Metallic solids

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Solids that are composed of metal atoms

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Metalloids

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Elements that lie along the diagonal line separating the metals from the nonmetals in the periodic table; the properties of metalloids are intermediate between those of mmetals and nonmetals

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Metallurgy

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The science of extracting metals from their natural sources by a combination of chemical and physical processes. It is also concerned with the properties and structures of metals and alloys

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metathesis reaction

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A reaction in which two substances react through an exchange of their component ions. precipitation and acid-base neutralization reactions are examples of this

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Metric system

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A system of measurement used in science and in most countries. The meter and the gram are examples of metric units

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Microstate

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The state of a system at a particular instant; one of many possible states of the system

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mineral

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A solid, inorganic substance occuring in nature, such as calcium carbonate, which occurs as calcite

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miscible

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Liquids that mix in all proportions

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Mixture

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A combination of two or more substances in which each substance retains its own chemical identity

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Molal boiling point elevation constant

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A constant characteristic of a particular solvent that gives the increase in boinling point as a function of solution molality

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Molal freezing point depression constant

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A constant characteristic of a particular solvent that gives the decrease in freezing point as a function of solution molality

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Molality

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The concentration of a solution expressed as moles of solute per kilogram of solvent; abbreviated m

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Molar heat capacity

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The heat required to rais the temperature of one mole of a substance by 1C

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Molarity

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The concentration of a solution expressed as moles of solute per kilogram of solvent; abbreviated M

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Molar mass

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The mass of one mole of a substance in grams; it is numberically equal to the fomula weight oin atomic mass units

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Mole

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A collection of Avogadro's number of objects