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Index (Z)
ZA - ZC
ZD - ZF
ZG - ZJ
ZK - ZN
ZO - ZR
ZS - ZV
ZW - ZZ
Moment of truth
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The fastest man-made object that ever leave the Earth is the Pinoeer 10 spacecraft, launched in 1972, and attained a speed of more than 32000 mph. |
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ZW - ZZ
zwitterion Chem.
A chemical ion that carries both positive and negative charges. The opposite charges are usually situated far from each other within the molecule. For example, the amino
acid, glycine with a chemical formula of H3N+ - CH2 - COO- where the positive charge is concentrated at the nitrogen atom,
while the negative charge is located at the oxygen carboxylate group.
ZW - ZZ
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