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An inhibitor, a catalyst that decreases the rate of reaction.

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Cyclotron

A device for accelerating charged particles along a spiral path.

Acid

A substance that produces H+(aq) ions in aqueous solution. Strong acids ionize completely or almost completely in dilute aqueous solution. Weak acids ionize only slightly. Chemicals or substances having the property of an acid are said to be acidic.

Shielding Effect

Electrons in filled sets of s , p orbitals between the nucleus and outer shell electrons shield the outer shell electrons somewhat from the effect of protons in the nucleus, also called screening effect.

Deuterium

An isotope of hydrogen whose atoms are twice as massive as ordinary hydrogen,deuterion atoms contain both a proton and a neutron in the nucleus.

Metallurgy

Refers to the overall processes by which metals are extracted from ores.

Native State

Refers to the occurrence of an element in an uncombined or free state in nature.

 

Equilibrium Constant

A quantity that characterizes the position of equilibrium for a reversible reaction, its magnitude is equal to the mass action expression at equilibrium. K varies with temperature.

Salinometer

An instrument for measuring the amount of salt in a solution. Also,"salimeter, salometer."

Leveling Effect

Effect by which all acids stronger than the acid that is characteristic of the solvent react with solvent to produce that acid, similar statement applies to bases. The strongest acid (base) that can exist in a given solvent is the acid (base) characteristic of the solvent.

Density

Density is the ratio b/w Mass and Volume: D=M/V