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All the forces of attraction among particles of a liquid.

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Atomic Number


Integral number of protons in the nucleus, defines the identity of element.
 

Colloid

A heterogeneous mixture in which solute-like particles do not settle out.

Saturated Solution

Solution in which no more solute will dissolve.

Alums

Hydrated sulfates of the general formula M+M3+(SO4)2.12H2).

D -Transition elements (metals)

B Group elements except IIB in the periodic table, sometimes called simply transition elements EX. Fe, Ni, Cu, Ti .
For further information see Metals.

Barometer

A device for measuring pressure.

Chemical Equation

Description of a chemical reaction by placing the formulas of the reactants on the left and the formulas of products on the right of an arrow.

Endothermicity

The absorption of heat by a system as the process occurs.

Electrolysis

Process that occurs in electrolytic cells.

Salicylaldehyde

An oily, slightly water-soluble liquid, C7H6O2, having an almondlike odor: used chiefly in perfumery and in the synthesis of coumarin.

Greenhouse Effect

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

Oxidation

An algebraic increase in the oxidation number, may correspond to a loss of electrons.

Chemical Hygiene Plan (CHP)

A written program developed and implemented by an employer designating proceedures, equipment, personal protective equipment, and work practices that are capable of protecting employees from the health hazards presented by hazardous chemicals usid in that particular workplace.

Reaction Quotient

The mass action expression under any set of conditions (not necessarily equlibrium), its magnitude relative to K determines the direction in which the reaction must occur to establish equilibrium.

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.

Inert s-pair Effect

Characteristic of the post-transition minerals, tendency of the outermost s electrons to remain nonionized or un shared in compounds.

Heterogeneous Catalyst

A catalyst that exists in a different phase (solid, liquid or gas) from the reactants, a contact catalyst.

Heat of Fusion

The amount of heat required to melt one gram of solid at its melting point with no change in temperature. Usually expressed in J/g. The molar heat of fusion is the amount of heat required to melt one mole of a solid at its melting point with no change in temperature and is usually expressed in kJ/mol.

Primary Standard

A substance of a known high degree of purity that undergoes one invariable reaction with the other reactant of interest.

PseudobinaryIonic Compounds

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