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

 

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Differential Thermometer

A thermometer used for accurate measurement of very small changes in temperature.

Adsorption

Adhesion of a species onto the surfaces of particles.

Dipole

Refers to the separation of charge between two covalently bonded atoms.

Cathode

Electrode at which reduction occurs in a cathode ray tube, the negative electrode.

Barometer

A device for measuring pressure.

Metathesis Reactions

Reactions in which two compounds react to form two new compounds, with no changes in oxidation number. Reactions in which the ions of two compounds exchange partners.

 

Endothermicity

The absorption of heat by a system as the process occurs.

Antibonding Orbital

A molecular orbital higher in energy than any of the atomic orbitals from which it is derived, lends instability to a molecule or ion when populated with electrons, denoted with a star (*) superscript or symbol.

Saccharide

An organic compound containing a sugar or sugars.

Viscosity

Resistance offered by the molecules of a liquid to flow is termed as viscosity.