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A compound containing oxygen in the -1 oxidation state. Metal peroxides contain the peroxide ion, O22

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    One of the most interesting and obvious chemical experiments is the experiment on the interaction of copper sulfate and calcium carbonate. The latter is contained in the shell of a simple egg, but copper sulphate should be searched in a chemical reagent store. This experience is simple, but...

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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...

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    Diamond is a crystalline modification of pure carbon formed in the deep interior of the Earth, in the upper mantle at depths of more than 80-100 kilometers, at exceptionally high pressure and temperature. It is the most precious stone, the hardest and most wear-resistant mineral, the most...



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Calorie

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.

Downs Cell

Electrolytic cell for the commercial electrolysis of molten sodium chloride. For further information see Electrochemistry or Fuel Cells.

Nickel-cadmium cell (Nicad battery)

A dry cell in which the anode is Cd, the cathode is NiO2, and the electrolyte is basic.

Transition State Theory

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

Heat Capacity

The amount of heat required to raise the temperature of a body (of any mass) one degree Celsius.

Element

A substance that cannot be decomposed into simpler substances by chemical means.

Activity of a component of ideal mixture

A dimensionless quantity whose magnitude is: equal to molar concentration in an ideal solution, equal to partial pressure in an ideal gas mixture, and defined as 1 for pure solids or liquids.

Frequency

The number of repeating corresponding points on a wave that pass a given observation point per unit time.

Bomb Calorimeter

A device used to measure the heat transfer between system and surroundings at constant volume.

Density

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