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Solution that resists change in pH, contains either a weak acid and a soluble ionic salt of the acid or a weak base and a soluble ionic salt of the base.

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Solvation

The process by which solvent molecules surround and interact with solute ions or molecules.

Matter

Anything that has mass and occupies space.

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.

Cloud Chamber

A device for observing the paths of speeding particiles as vapor molecules condense on them to form foglike tracks.

Percent by Mass

100% times the actual yield divided by theoretical yield.

Nodal Plane

A region in which the probability of finding an electron is zero.

 

Acidic Salt

A salt containing an ionizable hydrogen atom. Acidic salt does not necessarily produce acidic solutions.

Flotation

Method by which hydrophobic (water-repelling) particles of an ore are separated from hydrophilic (water-attracting) particles of a metallurgical pretreatment process.

Nonelectrolyte

A substance whose aqueous solutions do not conduct electricity.

PseudobinaryIonic Compounds

Compounds that contain more than two elements but are named like binary compounds.