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The sum of the numbers of protons and neutrons in an atom, an integer.

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Fat

Solid triester of glycerol and (mostly) saturated fatty acids.

Control Rods

Rods of materials such as cadmium or boron steel that act as neutron obsorbers (not merely moderaters) used in nuclear reactors to control neutron fluxes and therfore rates of fission.

Heterocyclic Amine

Amine in which the nitrogen is part of a ring.

Capillary

A tube having a very small inside diameter.

Dry Cells

Ordinary batteries (voltaic cells) for flashlights. radios, and so on, many are Leclanche cells.

Quantum Numbers

Numbers that describe the energies of electrons in atoms, derived from quantum mechanical treatment.

Proton

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

Secondary Standard

A solution that has been titrated against a primary standard. A standard solution is a secondary standard.

 

Isoelectric

Having the same electronic configurations.

Nucleus

The very small, very dense, positively charged center of an atom containing protons and neutrons, as well as other subatomic particles.