•
dissociation
: When water dissolves a compound.
•
distillation
: This is when you separate a mixture of liquids by heating it up.
The one with the lowest boiling point evaporates first, followed by the one with
the
next lowest boiling point, etc.
•
double-displacement reaction (a.k.a. double replacement reaction)
:
When the cations of two ionic compounds switch places.
•
effusion
: When a gas moves through an opening into a chamber that
contains no pressure. Effusion is much faster than
diffusion because there are
no other gas molecules to get in the way.
•
electrolysis
: When electricity is used to break apart a chemical compound.
•
electrolyte
: An ionic compound that dissolves in water to conduct electricity.
Strong electrolytes break apart completely in water;
weak electrolytes only fall
apart a little bit.
(Actually, this isn't entirely true, as Raji Heyovska informs me. Apparently strong electrolytes also dissociate
partially in water, though much more so than weak ones. For more info, check out his paper at
http://www.jh-
inst.cas.cz/~rheyrovs
. However, it is also true that the usual definition of a strong electrolyte is one that dissociates
completely in water, which is why I include that definition above.)
•
electron affinity
: The energy change that accompanies
the addition of an
electron to an atom in the gas phase.
•
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