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A substance whose aqueous solutions do not conduct electricity.

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Substance

Any kind of matter all specimens of which have the same chemical composition and physical properties.

 

Spectator Ions

Ions in a solution that do not participate in a chemical reaction.

Electrode Potentials

Potentials, E, of half-reactions as reductions versus the standard hydrogen electrode.

Cathode Ray Tube

Closed glass tube containing a gas under low pressure, with electrodes near the ends and a luminescent screen at the end near the positive electrode, produces cathode rays when high voltage is applied.

Alkynes

Unsaturated hydrocarbons that contain one or more carbon-carbon triple bonds.

Reaction Stoichiometry

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

Coordination Number

In describing crystals, the number of nearest neighbours of an atom or ion. The number of donor atoms coordinated to a metal.

Dosimeter

A small, calibrated electroscope worn by laboratory personnel and designated to detect and measure incident ionizing radiation or chemical exposure.

Creating Malachite egg

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 effective and visual, and as a result we will get something beautiful.

Theoretical Yield

Maximum amount of a specified product that could be obtained from specified amounts of reactants, assuming complete consumption of limiting reactant according to only one reaction and complete recovery of product.