Electrode at which reduction occurs in a cathode ray tube, the negative electrode.
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The scanning tunneling microscope (STM) invented by Heinrich Rohrer and Gerd Binnig in the 1980s still manages to do a great job today and competes with more advanced microscope types. The scanning tunneling microscope is used for studying the surface atoms that are found on various materials. The...
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Most of the microscopes used today are compound. A compound microscope features two or more lenses. A hollow cylinder called the tube connects the two lenses. The top lens, the one people look through, is called the eyepiece. The bottom lens is known as the objective lens. Below the two lenses is...
Electrolytic cell for the commercial electrolysis of molten sodium chloride. For further information see Electrochemistry or Fuel Cells.
Refers to substances that crystallize in more than one crystalline arrangement.
The substance that oxidizes another substance and is reduced.
Coordination Compound or Complex
A compound containing coordinate covalent bonds.
Alkaline Earth Metals
Group IIA metals
Elements 89 to 103 (between lawrencium and actinium) on the periodic table. Only the first four have been found in nature in appreciable amounts. The remainder have been produced synthetically.
Equation relating the rate of a reaction to the concentrations of the reactants and the specific rate of the constant.
The slowest step in a mechanism, the step that determines the overall rate of reaction.
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.
A molecular orbit lower in energy than any of the atomic orbitals from which it is derived, lends stability to a molecule or ion when populated with electron.
Rate of Reaction
Change in the concentration of a reactant or product per unit time.
A compound containing oxygen in the -1 oxidation state. Metal peroxides contain the peroxide ion, O22
The amount of heat required to raise the temperature of one gram of water from 14.5°C to 15.5°C. 1 calorie = 4.184 joules.
Substances consumed in a chemical reaction.
Discovered : known to ancient civilisations
Origin : The name is derived from 'Cuprum', the Latin name for Cyprus.
A neutron ejected at high kinetic energy in a nuclear reaction.
The ratio of the density of a substance to the density of water.
Number of moles of solute per litre of solution.
A state of dynamic balance in which the rates of forward and reverse reactions are equal, there is no net change in concentrations of reactants or products while a system is at equilibrium.
A region in which the probability of finding an electron is zero.