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Diffraction is the phenomenon observed when waves appear in a region where a shadow, or no wave...
the movement of particles from an area of higher concentration to an area of lower concentration...
a solution to which a little acid has been added to a lot of water.
a solution to which a little base has been added to a lot of water.
if one variable increases, the other variable increases at the same fixed rate.
a chemical change in which a less reactive element is replaced in a compound by a more reactive...
during a reaction a molecule reacts with water to form ions (to separate into ions).