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26.12: L

Difficulty Level: At Grade Created by: CK-12
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lanthanide series
elements with atomic numbers 57 – 70
lattice structure
a systematic, symmetrical network of atoms forming an ionic solid.
law of conservation of energy
states that energy cannot be created or destroyed, it can only be changed from one form to another
law of conservation of matter and energy
states that the total amount of mass and energy in the universe is conserved (does not change)
law of constant composition
law that states that the ratio by mass of the elements in a chemical compound is always the same, regardless of the source of the compound
law of definite proportions
states that in a given chemical substance, the elements are always combined in the same proportions by mass
law of multiple proportions
states that when two elements react to form more than one substance and the same amount of one element is used in each substance, then the ratio of the masses used of the other element will be in small whole numbers
Le Châtelier’s Principle
applying a stress to a system at equilibrium causes a shift in the equilibrium position that partially counteracts the stress
the measurement of anything from end to end
Lewis acid
a substance that accepts a pair of electrons from another substance
Lewis base
a substance that donates a pair of electrons to a substance
Lewis dot diagram
a diagram that shows valence electrons as dots around the symbol of an element
limiting reactant
the reactant that determines the maximum amount of product that can be formed in a chemical reaction
fats and oils (triglycerides) produced for the purpose of storing energy
London dispersion forces
the electrostatic attractions of molecule or atoms for nearby molecules or atoms caused by the temporary unsymmetrical distribution of electrons in electron clouds

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    Date Created:
    Feb 23, 2012
    Last Modified:
    Mar 26, 2015
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