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The interaction of orbitals on different atoms in the same region of space.

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Solute

The dispersed (dissolved) phase of a solution.

Saccharide

An organic compound containing a sugar or sugars.

Semipermable Membrane

A thin partition between two solutions through which certain molecules can pass but others cannot.

Dipole

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

Ionization Energy

The minimum amount of energy required to remove the most loosely held electron of an isolated gaseous atom or ion.

Diagonal Similarities

Refers to chemical similarities in the Periodic Table of elements of Period 2 to elements of Period 3 one group to the right, especially evident toward the left of the periodic table.

Thermonuclear Energy

The energy stored in the nucleus of an atom and released through fission, fusion, or radioactivity. In these processes a small amount of mass is converted to energy according to the relationship E = mc2, where E is energy, m is mass, and c is the speed of light.

Heterogeneous Equilibria

Equilibria involving species in more than one phase.

Formula Unit

The smallest repeating unit of a substance. The molecule for nonionic substances

xylidine

Any of six isomeric compounds that have the formula C8H11N, are derivatives of xylene, and resemble aniline: used in dye manufacture.