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Colloidal suspension of liquid in gas.

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Mass

A measure of the amount of matter in an object. Mass is usually measured in grams or kilograms.

Composition Stoichiometry

Descibes the quantitative (mass) relationships among elements in compounds.

Solution

Homogeneous mixture of two or more substances.

Rate of Reaction

Change in the concentration of a reactant or product per unit time.

Critical Mass

The minimum mass of a particular fissionable nuclide in a given volume required to sustain a nuclear chain reaction.

Accuracy

How closely a measured value agrees with the correct value.

Dipole Moment

The product of the distance separating opposite charges of equal magnitude of the charge, a measure of the polarity of a bond or molecule, a measured dipole moment refers to the dipole moment of an entire molecule.

xylan

The pentosan occurring in woody tissue that hydrolyzes to xylose: used as a source of furfural.

Greenhouse Effect

Trapping of heat at the surface of the earth by carbon dioxide and water vapour in the atmosphere.

Homogeneous Catalyst

A catalyst that exists in the same phase (solid, liquid or gas) as the reactants. The process is called Homogeneous Catalysis.