Lessons On Common Things; for the Use of Schools And Families

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QUICKSILVER OR MERCURY.
Qualities, It is heavy. 1.
fluid. 2.
cold. 3.
divisible. 4.
*volatile when heated, white.
brilliant. 5.
opaque.
least tenacious of all bodies, dilatable by heat, medicinal, natural, inanimate, mineral.
1. "Weight." Nearly fourteen times heavier than water — the heaviest known fluid.
2. "Fluid." It always retains its fluidity in our temperature, but in countries near the poles it congeals, and then is malleable, ductile and tenacious.
3. " Cold." It is the coldest of all
...fluids, and the hottest when boiling.
* Volatile, from Lat. Volure, to fly.
LESSON XXXV. QUICKSILVER. 155 4. It is capable of division, by the slightest effort, into an indefinite number of particles, each of a spherical shape.
5. The brilliancy of metals is so peculiar and great, that it is called the metallic lustre.
Uses of Quicksilver.
Quicksilver penetrates and soften? other metals, losing its own fluidity and forming a kind of paste called an Amalgam. This affinity or attraction that it has for the other metals makes it exceed- ingly useful in separating them from substances with which they are found combined ; they leave these to unite with the mercury, and this being volatilized, the pure metal remains.


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