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The mass percent of each element in a compound.

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Acetic Acid

CA3COOH, clear, colorless liquid, pungent odor. Boiling point 140C, flash point 54C (closed cup), autoignition temperature 38OC.

Partial Pressure

The pressure exerted by one gas in a mixture of gases.

Substitution Reaction

A reaction in which an atom or a group of atoms is replaced by another atom or group of atoms.

Electronic Geometry

The geometric arrangement of orbitals containing the shared and unshared electron pairs surrounding the central atom of a molecule or polyatomic ion.

Hard Water

Water containing Fe3+, Ca2+, and Mg2+ ions, which forms precipates with soap.

Quantum Mechanics

Mathematical method of treating particles on the basis of quantum theory, which assumes that energy (of small particles) is not infinitely divisible.

Polarization

The buildup of a product of oxidation or a reduction of an electrode, preventing further reaction.

Thermal Cracking

Decomposition by heating a substance in the presence of a catalyst and in the absence of air.

 

Nonpolar Bond

Covalent bond in which electron density is symmetrically distributed.

Electron Affinity

The amount of energy absorbed in the process in which an electron is added to a neutral isolated gaseous atom to form a gaseous ion with a 1- charge, has a negative value if energy is released.