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27.12: M

Difficulty Level: At Grade Created by: CK-12
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lattice energy
Lattice energy of an ionic solid is a measure of the strength of bonds in that ionic compound.
law of conservation of mass
For a closed system, the mass of the reactants must equal the mass of the products for any chemical process.
law of definite proportions
Joseph Proust found that compounds always contain the same proportion of elements by mass, regardless of amount.
law of mass action
A general expression that can be applied to any chemical reaction.
law of multiple proportions
This law states that if two elements form more than one compound between them, then the ratios of the masses of the second element that combine with a fixed mass of the first element will be ratios of small whole numbers.
Le Chatelier’s Principle
Describes how a chemical system will change to maintain equilibrium when a stress is applied.
Lewis acid
Accepts an electron pair.
Lewis base
Donates an electron pair.
Lewis structure
A simple way of representing covalent bonds. Each dot in the structure represents one electron in the compound. Also known as Lewis dot structures.
light
Behaves both as a particle and as a wave.
limiting reactant/reagent
The reactant that is used up first in a reaction; the limiting reactant determines the amount of product that can be formed in a chemical reaction.
linear
Molecule with atoms organized so the bond angle is 180 degrees between each of them.
line-emission spectrum
Frequencies of electromagnetic radiation given off by a compound’s molecules or element’s atoms.
lipid
Does not possess a unique structure. Lipids are better defined by the fact that they are not particularly soluble in water. Classes include fatty acids, triglycerides, phospholipids, and cholesterol.
lipoprotein
Transports lipids in the bloodstream.
lone pair
A couple of opposite spin valence electrons that are accountable for the development of coordinate bonds and are not shared between atoms.
lustrous
Glowing.

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Sep 09, 2013
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CK.SCI.ENG.SE.1.Chemistry-Basic.27.12
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