obalt
nitrate solution.

With the six methods of examination just given almost every simple
substance can be detected, but should any doubt remain, a few simple
tests in the "liquid way" will be sufficient to substantiate the
blowpipe examination.

CHAPTER III

GENERAL REACTIONS FOR THE DETECTION OF THE METALLIC ELEMENTS IN SIMPLE
COMPOUNDS

For the sake of convenience, rather than for scientific reasons, the
following compounds have been arranged in alphabetic order. Also the
oxides of the elements have been taken, since they exhibit the reactions
to best advantage.

The student should work through carefully each one of the tests and
satisfy himself as to the characteristic reactions of the various
elements, for only in this way can he expect to recognize the substances
when presented to him as "unknowns." It is advisable to provide a
note-book and rule it as follows:--

-----------------------------------------------------------------------------
BEHAVIOR OF SUBSTANCE |
----------------------------------------------------------------------------|
Before Bp.| Before Bp. | In ignition | In flame| In flame | After first |
on Ch. | on Ch. with | tube with | on | with borax| ignition |
alone | Na_{2}CO_{3}| Na_{2}CO_{3}| platinum| bead | with |
| | and Ch. | wire | | Co(NO_{3})_{2}|
----------------------------------------------------------------------------|
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
----------------------------------------------------------------------------|
_Remarks_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ |