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The solid and liquid states.

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Heterogeneous Mixture

A mixture that does not have uniform composition and properties throughout.

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.

Nickel-cadmium cell (Nicad battery)

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

Coordination Number

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

Density

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

Open Sextet

Refers to species that have only six electrons in the highest energy level of the central element (many Lewis acids).

Alloying

Mixing of metal with other substances (usually other metals) to modify its properties.

Mole Fraction

The number of moles of a component of a mixture divided by the total number of moles in the mixture.

 

Heat of Fusion

The amount of heat required to melt one gram of solid at its melting point with no change in temperature. Usually expressed in J/g. The molar heat of fusion is the amount of heat required to melt one mole of a solid at its melting point with no change in temperature and is usually expressed in kJ/mol.

Ideal Gas

A hypothetical gas that obeys exactly all postulates of the kinetic-molecular theory.