Chemical Instructor Presenting a Familiar Method of Teaching the Chemical Prin
Chemical Instructor Presenting a Familiar Method of Teaching the Chemical Prin
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Pour the amalgam upon k and rub it over the tin foil with the finger for about two minutes. Now press- upon it a piece of dry clean glass. Press it down with such fcrce as to press out all the uncombined mercury. Lay a weight the glass and leave it half an hour 5 is* 174 CLASS V. METALS.
it may be taken up, and will be found to be a mirror.
Application. All looking glasses are made in this way. LA the large way a marble slab is plac- ed in an inclined position, so that the excess of mercury run...s off and is saved for the next, &c.
Prop. 4. Tin will form an imperfect alloy with iron.
Illustration. Prepare a very thin slip of iron and scour it bright, dipping it several times, while scouring it, in very dilute sulphuric acid. Bend one end of it, so that it will fit the inside of the bottom of a crucible. Melt some tin in the cruci- ble, and dip the bent end of the slip of iron into it. The tin will combine with the surface of the iron, and, if it is very thin, it will penetrate entirely through it.
What to read after Chemical Instructor Presenting a Familiar Method of Teaching the Chemical Prin?
You can find similar books in the "Read Also" column, or choose other free books by Amos Eaton to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Pour the amalgam upon k and rub it over the tin foil with the finger for about two minutes. Now press- upon it a piece of dry clean glass. Press it down with such fcrce as to press out all the uncombined mercury. Lay a weight the glass and leave it half an hour 5 is* 174 CLASS V. METALS.
it may be taken up, and will be found to be a mirror.
Application. All looking glasses are made in this way. LA the large way a marble slab is plac- ed in an inclined position, so that the excess of mercury run...s off and is saved for the next, &c.
Prop. 4. Tin will form an imperfect alloy with iron.
Illustration. Prepare a very thin slip of iron and scour it bright, dipping it several times, while scouring it, in very dilute sulphuric acid. Bend one end of it, so that it will fit the inside of the bottom of a crucible. Melt some tin in the cruci- ble, and dip the bent end of the slip of iron into it. The tin will combine with the surface of the iron, and, if it is very thin, it will penetrate entirely through it.
What to read after Chemical Instructor Presenting a Familiar Method of Teaching the Chemical Prin?
You can find similar books in the "Read Also" column, or choose other free books by Amos Eaton to read onlineMoreLess
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