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27.13: M

Created by: CK-12
macroscopic
Description of substances that refers to objects that can be seen, touched, and measured directly.
magnetic quantum number
Indicates the orientation of the orbital around the nucleus, symbolized by the letter ml.
main-group element
A p-block element.
mass
Measure of the amount of matter that an object contains.
mass defect
The difference between the mass of an atom and the sum of the masses of its protons, neutrons, and electrons.
mass number
Total number of protons and neutrons in an atom.
matter
Anything that has mass and takes up space.
measurement
Quantity that has both a number and a unit.
melting point
The temperature at which a solid changes into a liquid; is the same as the freezing point.
metal
Element that is a good conductor of heat and electricity.
metallic bond
The attraction of the stationary metal cations to the surrounding mobile electrons.
metalloid
Element that has properties that are intermediate between those of metals and nonmetals.
microscopic
Description of substances that refers to the small particles (atoms and molecules) that make up all matter.
miscible
Quality observed by liquids that dissolve in one another in all proportions.
mixture
Physical blend of two or more components, each of which retains its own identity and properties in the mixture.
moderator
A material which slows down high-speed neutrons in a nuclear reactor.
molal boiling-point elevation constant
A constant that is equal to the change in the boiling point for a 1-molal solution of a nonvolatile molecular solute.
molal freezing-point depression constant
A constant that is equal to the change in the freezing point for a 1-molal solution of a nonvolatile.
molality
The number of moles of solute dissolved in one kilogram of solvent.
molar heat of condensation
The heat released by one mole of a substance as it is converted from a gas to a liquid.
molar heat of fusion
The heat absorbed by one mole of a substance as it is converted from a solid to a liquid.
molar heat of solidification
The heat released by one mole of a substance as it is converted from a liquid to a solid.
molar heat of solution
The heat absorbed or released when one mole of a substance is dissolved in water.
molar heat of vaporization
The heat absorbed by one mole of a substance as it is converted from a liquid to a gas.
molar mass
The mass of one mole of representative particles of a substance.
molar solubility
The number of moles of solute in one liter of saturated solution.
molar volume
The volume of one mole of a gas at standard temperature and pressure; numerical value is 22.4 L.
molarity
The number of moles of solute dissolved in one liter of solution.
mole
The amount of a substance that contains 6.02 × 1023 representative particles of that substance.
molecular equation
An equation in which the formulas of the compounds are written as though all substances exist as molecules.
molecular formula
Chemical formula of a molecular compound that shows the kinds and numbers of atoms present in a molecule of the compound.
molecular geometry
The three-dimensional arrangement of atoms in a molecule.
molecularity
The number of molecules reacting in an elementary step of a reaction.
mole fraction (X)
The ratio of moles of one substance in a mixture to the total number of moles of all substances.
mole ratio
A conversion factor that relates the amounts in moles of any two substances in a chemical reaction.
monatomic ion
Ions that consist of a single atom with either a positive or negative charge.
monomer
The small molecules which are repeated over and over and make up a polymer.
monoprotic acid
An acid that contains one ionizable hydrogen.
monosaccharide
A carbohydrate consisting of one sugar unit.

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Grades:

7 , 8

Date Created:

Apr 20, 2012

Last Modified:

Aug 19, 2014
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CK.SCI.ENG.SE.1.Phy-Sci-MS.26.13

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