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It is impossible to determine accurately both the momentum and position of an electron simultaneously.

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Osmosis

The process by which solvent molecules pass through a semipermable membrane from a dilute solution into a more concentrated solution.

 

Flash Point

The temperature at which a liquid will yield enough flamable vapour to ignite. There are various recognized industrial testing methods, therefore the method used must be stated.

Solvolysis

The reaction of a substance with the solvent in which it is dissolved.

Open Sextet

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

Barometer

A device for measuring pressure.

Ligand

A Lewis base in a coordination compound.

Absolute Zero

The zero point on the absolute temperature scale, -273.15°C or 0 K, theoretically, the temperature at which molecular motion ceases. The concept of an absolute zero temperature was first deduced from experiments with gases. When a fixed volume of gas is cooled, its pressure decreases with its temperature. Absolute zero physically possesses quantum mechanical zero-point energy.

20 interesting chemistry facts

20 interesting chemistry facts.

Proton

A subatomic particle having a mass of 1.0073 amu and a charge of +1, found in thew nuclei of atoms.

Shielding Effect

Electrons in filled sets of s , p orbitals between the nucleus and outer shell electrons shield the outer shell electrons somewhat from the effect of protons in the nucleus, also called screening effect.