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the movement of particles suspended in a fluid (a liquid or a gas) as a result of being bumped by other, smaller particles.
compounds of aluminium oxide and silicon oxide that form an open lattice structure. They are...
the movement of particles from an area of higher concentration to an area of lower concentration...
a group of elements between the metals and the non-metals. They are semiconductors and have some...
mass per unit volume of a substance. The number of molecules in a particular area or a measure...