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CA3COOH, clear, colorless liquid, pungent odor. Boiling point 140C, flash point 54C (closed cup), autoignition temperature 38OC.

A 99.7% solution is used in the S.S.E. laboratory for junction depth measurements. Acetic acid is also present in the metal etch solution used for Aluminum etch procedure.

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Film badge

A small patch of photographic film worn on clothing to detect and measure accumulated incident ionizing radiation.

Hybridization

Mixing a set of atomic orbitals to form a new set of atomic orbitals with the same total electron capacity and with properties and energies intermediate between those of the original unhybridized orbitals.

Primary Voltaic Cells

Voltaic cells that cannot be recharged, no further chemical reaction is possible once the reactants are consumed.

Active Metal

Metal with low ionization energy that loses electrons readily to form cations.

Dubnium

Discovered : at both Berkeley, California, USA, and Dubna, near Moscow, Russia in 1970. Description:A highly radioactive metal which does not occur naturally, and of which only a few atoms have ever been made. It is of research interest only. Origin:The element is named after the Russian town of Dubna.

Periodicity

Regular periodic variations of properties of elements with atomic number (and position in the periodic table).

Atmosphere

A unit of pressure, the pressure that will support a column of mercury 760 mm high at 0 °C.

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.

Electrolytic Conduction

Conduction of electrical current by ions through a solution or pure liquid.

Cohesive Forces

All the forces of attraction among particles of a liquid.