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A dry cell in which the electrolyte contains KOH.

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Hydration

Reaction of a substance with water.

Alkyl Group

A group of atoms derived from an alkane by the removal of one hydrogen atom.

Mass Number

The sum of the numbers of protons and neutrons in an atom, an integer.

Sigma Bonds

Bonds resulting from the head-on overlap of atomic orbitals, in which the region of electron sharing is along and (cylindrically) symmetrical to the imaginary line connecting the bonded atoms.

Enantiomer

One of the two mirror-image forms of an optically active molecule.

Standard Molar Volume

The volume occupied by one mole of an ideal gas under standard conditions, 22.4liters.

Dipole

Refers to the separation of charge between two covalently bonded atoms.

Emulsifying Agent

A sustance that coats the particles of the dispersed phase and prevents coagulation of colloidal particles, an emulsifier.

Inhibitory Catalyst

An inhibitor, a catalyst that decreases the rate of reaction.

Nuclide Symbol

Symbol for an atom A/Z E, in which E is the symbol of an element, Z is its atomic number, and A is its mass number.