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Hydrocarbons that contain double or triple carbon-carbon bonds.

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Hydration

Reaction of a substance with water.

Square Planar

A term used to describe molecules and polyatomic ions that have one atom in the center and four atoms at the corners of a square.

Photoelectric Effect

Emission of an electron from the surface of a metal caused by impinging electromagnetic radiation of certain minimum energy, current increases with increasing intensity of radiation.

 

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.

Phenol

Hydrocarbon derivative containing an [OH] group bound to an aromatic raing.

 

Nuclear Fission

The process in which a heavy nucleus splits into nuclei of intermediate masses and one or more protons are emitted.

Fluids

Substances that flow freely, gases and liquids.

Chain Termination Step

The combination of two radicals, which removes the reactive species that propagate the change reaction.

PseudobinaryIonic Compounds

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

Solution

Homogeneous mixture of two or more substances.

Raoult's Law

The vapor pressure of a solvent in an ideal solution decreases as its mole fraction decreases.

Zone Refining

A method of purifying a bar of metal by passing it through an induction heater, this causes impurties to move along a melted portion. This method applies the fact when a metal crystallizes on cooling, impurities are automatically expelled as they do not form part of the crystal.

Halogens

Group VIIA elements: F, Cl, Br, I

Breeder Reactor

A nuclear reactor that produces more fissionable nuclear fuel than it consumes.

Transition State Theory

Theory of reaction rates that states that reactants pass through high-energy transition states before forming products.

Law of Definite Proportions (Law of Constant Composition)

The law stating that a pure substance will always have the same percent by weight. Different samples of a pure compound always contain the same elements in the same proportions by mass.

Radiation

High energy particles or rays emitted during the nuclear decay processes.

Cation

A positive ion, an atom or group of atoms that has lost one or more electrons.

Precipitate

An insoluble solid formed by mixing in solution the constituent ions of a slightly soluble solution.

Method of Initial Rates

Method of determining the rate-law expression by carrying out a reaction with different initial concentrations and analyzing the resultant changes in initial rates.