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Formula that indicates the actual number of atoms present in a molecule of a molecular substance.

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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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Electrolyte

A substance whose aqueous solutions conduct electricity.

 

Metallic Bonding

Bonding within metals due to the electrical attraction of positively charges metal ions for mobile electrons that belong to the crystal as a whole.

Aromatic Hydrocarbons

Benzene and its derivatives.

Actual Yield

Amount of a specified pure product actually obtained from a given reaction. Compare with Theoretical Yield.

Continuous Spectrum

Spectrum that contains all wave-lengths in a specified region of the electromagnetic spectrum.

Heat of Solution

The amount of heat absorbed in the formation of solution that contains one mole of solute, the value is positive if heat is absorbed (endothermic) and negative if heat is released (exothermic).

Positron

A Nuclear particle with the mass of an electron but opposite charge.

Reaction Stoichiometry

Description of the quantitative relationships among substances as they participate in chemical reactions.

Frequency

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

Law of Combining Volumes (Gay-Lussac's Law)

At constant temperature and pressure, the volumes of reacting gases (and any gaseous products) can be expressed as ratios of small whole numbers.