CN106448396A - Novel flame reaction teaching aid - Google Patents
Novel flame reaction teaching aid Download PDFInfo
- Publication number
- CN106448396A CN106448396A CN201610736596.0A CN201610736596A CN106448396A CN 106448396 A CN106448396 A CN 106448396A CN 201610736596 A CN201610736596 A CN 201610736596A CN 106448396 A CN106448396 A CN 106448396A
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- teaching aid
- inner shell
- flame reaction
- flame
- methanol
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/24—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for chemistry
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Physics (AREA)
- Algebra (AREA)
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- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Mathematical Optimization (AREA)
- Medicinal Chemistry (AREA)
- Pure & Applied Mathematics (AREA)
- Business, Economics & Management (AREA)
- Chemical & Material Sciences (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Lighters Containing Fuel (AREA)
Abstract
The invention relates to a novel flame reaction teaching aid, and belongs to the technical field of teaching appliances. The novel flame reaction teaching aid comprises an inner shell, the inner shell is provided with a combustion cavity, an ignition structure is arranged on one side of the combustion cavity, a wick stretching into the inner shell is arranged in the combustion cavity, the inner shell is filled with oil absorbing cotton, and the oil absorbing cotton is dipped with methanol solution. The main body structure adopts commercial common lighter structure, the fuel in the inner shell is substituted into the oil absorbing cotton dipped with methanol solution, and the teaching aid differs from an alcohol lamp in that the flame is lighter than that of ethanol when methanol is burnt, so that the interference to observation of the flame is low; and the teaching aid adopting the oil absorbing cotton dipped for combustion greatly improves the safety over directly filled liquid fuel, is convenient to carry, and has remarkable beneficial effects.
Description
Technical field
The present invention relates to a kind of new flame reaction teaching aid, belongs to teaching aid technical field.
Background technology
The test of flame reaction, also referred to as flame color and flame test, are some metals or their compound in colourless flame
The reaction of the color of flame expression characteristicses is made during middle calcination.Its principle is that every kind of element has its other spectrum.Sample is usual
It is the form of powder or fritter.Cleaned with one and more inactive tinsel（Such as platinum or nichrome）Sample is contained, then is put
To non-luminous flame（Blue flame）In.In chemistry, it is commonly used to test certain metal with the presence or absence of in compound.While utilizing flame color
Reaction, people are adding special metal element consciously in fireworks, are making fireworks more bright and colourful.
Flame reaction is physical change.It does not generate novel substance, and flame reaction is material atom internal electron energy level
Change, popular saying is the change of the electron energy in atom, is not related to the change of the structure of matter and chemical property.Flame reaction
Be some metals or their volatile compound make during calcination in colourless flame flame expression characteristicses color reaction.Have
A little metals or their compound can make flame in special color in calcination.
Carry out flame reaction and should use platinum filament（Nickel wire, iron wire）.The tinsel being embedded on Glass rod is dipped in dilute hydrochloric acid
After washing,（This is because the chloride that metal-oxide is generated with hydrochloric acid reaction easily gasifies in calcination and volatilizees；If using sulphuric acid,
As the boiling point of the sulfate for generating is very high, a small amount of impurity is not readily removable and disturbs the color of flame）It is placed on the fire of alcohol burner
Flame（Preferably gas burner, because its flame color is shallow, temperature is high, if no can also with alcohol blast burner）In calcination, directly
When arriving as the color of original flame, then examined solution being dipped in tinsel, is then placed on flame, at this moment can just see
To the feature flame color for being examined contained element in solution.This operational approach is primarily present following deficiency：1. alcohol burner itself is fiery
Flame color is disturbed, and 2. flame color low intensity, persistent period be short, flame color low intensity, and 3. metal platinum is valuable is not easy to obtain, 4. complex operation,
5. experimental situation light interference.
Content of the invention
For solving problems of the prior art, the invention provides a kind of new flame reaction teaching aid, particular technique
Scheme is as follows：
A kind of new flame reaction teaching aid, including inner shell, is provided with combustion chamber on the inner shell, and the combustion chamber side is provided with
Ignition structure, the burning intracavity is provided with the wick for extending into inner housing inner, and the inner housing inner is filled with oil absorbent material, described
Methanol solution is impregnated with oil absorbent material.
As the improvement of technique scheme, metal salt solution and the methanol group of flame reaction in the oil absorbent material, is impregnated with
The mixed liquor for becoming.
The volume ratio of the mixed liquor for constituting with methanol as the improvement of technique scheme, the metal salt solution is 1:
0.5～4.
Used as the improvement of technique scheme, the wick is made using asbestos.
Used as the improvement of technique scheme, the combustion chamber side offers air vent.
As the improvement of technique scheme, outside the inner shell, shell is cased with, is provided with the inner shell and can cover burning
The upper lid in chamber.
The teaching aid of technique scheme compared with prior art, has following five advantages：
（1）The teaching aid does not use ethanol, and adopts methanol for fuel, and flame color is light, and the observation interference to flame color is little；
（2）Wick adopts refractory material asbestos, and during experiment, it is intended only as fuel carrier, and itself does not burn, thus effect is good
Make fuel carrier in combustibles such as absorbent cottons；
（3）Alcohol burner is not used, and a kind of lighter for storing fuel is adopted as demonstration teaching aid, simple to operate, it is easy to take
Band；
（4）The material for being ready for flame reaction is stored in the oil absorbent material in lighter, is dipped solution without using platinum filament, is kept away
Exempt from the trouble of platinum filament is cleaned repeatedly, and can be reused several times, join the link of reagent before reducing experiment, saved medicine
Consumption, experimental cost is effectively controlled；
（5）The experiment of corresponding flame reaction can be carried out respectively using multiple teaching aids, accomplish simple and convenient, efficiently demonstrate different
Flame reaction, with beneficial technique effect and significant practical value.
Description of the drawings
Fig. 1 is a kind of structural representation of new flame reaction teaching aid of the present invention；
Fig. 2 is a kind of schematic diagram of new flame reaction teaching aid inner shell bottom of the present invention.
Specific embodiment
As shown in Figure 1 and Figure 2, the invention provides a kind of new flame reaction teaching aid, including inner shell 20, the inner shell 20
On be provided with combustion chamber 21,21 side of the combustion chamber is provided with ignition structure 30, is provided with and extend in the combustion chamber 21
Wick 50 inside inner shell 20, is filled with oil absorbent material 40, is impregnated with methanol solution in the oil absorbent material 40 inside the inner shell 20.
Agent structure of the present invention adopts lighter structure common on the market, the fuel in inner shell 20 is replaced with and is impregnated with methanol solution
Oil absorbent material 40, now the teaching aid be with the difference of alcohol burner, during methanol burning, flame color is light compared with ethanol, sight to flame color
Examine interference little, and the teaching aid greatly improved with respect to liquid fuel safety is directly contained using the dipping burning of oil absorbent material 40,
It is easy to carry.
Further, in the oil absorbent material 40, the mixing that the metal hydrochloric acid solution of flame reaction is constituted with methanol is impregnated with
Liquid, the metal acid solution for carrying out flame reaction is directly mixed into and is impregnated with the oil absorbent material 40 of fuel, in flame by the preferred version
During colour response experiment, dip in without using tinsel and corresponding metal salt solution is washed, can keep long lasting for burning, and can
The flame reaction experiment of same metal is repeated, the puzzlement of solution when effectively solving is tested every time, will be prepared in advance.
Further, the volume ratio of the mixed liquor that the metal salt solution is constituted with methanol is 1:0.5～4, this is preferred
Scheme mainly needs to ensure that oil absorbent material 40 is impregnated with the fuel that burning needs, wherein metal salt solution does not have special wanting to concentration
Ask, mainly using metal and the hydrochloric acid reaction corresponding metal salt solution of generation, it is anti-that its process for preparation is referred to existing flame color
The metal salt solution that should prepare, such as calcium chloride solution, Klorvess Liquid, copper chloride solution etc..
Further, the wick 50 is made using asbestos.The preferred version is using refractory material asbestos as Deng Xing, real
When testing, it is intended only as fuel carrier, and itself does not burn, thus effect is better than the combustibles such as absorbent cotton and makees fuel carrier, so as to
Avoid impact of the wick burning to flame reaction experiment.
In the above-described embodiments, 21 side of the combustion chamber offers air vent 22, and the air vent 22 can improve burning
21 inner air flow efficiency of chamber, improves efficiency of combustion；Meanwhile, shell 10 being cased with outside the inner shell 20, arranges on the inner shell 20
There is the upper lid 30 that can cover combustion chamber 21, after the completion of experiment, cover and upper lid 30, convenient and practical.
Complete flame reaction experiment will be carried out using the teaching aid below, comprise the following steps that：
（1）The mixed solution of the metal salt solution and methanol that are ready for flame reaction is positioned in reagent bottle, standby；
（2）Take 20mL～30mL need to carry out flame reaction mixed solution take out after be positioned in small beaker, open shell 10,
Oil absorbent material 40 inside inner shell 20 is immersed in solution, is taken out after two minutes, be installed onto in inner shell 20；
（3）Light wick 50, you can be clearly observed the flame color of the metal ion；
（4）Methanol can also be directly entered on oil absorbent material 40, then spread the powder of different slaines on wick respectively, lighted
The flame reaction phenomenon of metal ion is observed after wick 50 respectively can.
Above embodiments of the invention are described in detail, but the content have been only presently preferred embodiments of the present invention,
The practical range being not to be regarded as limiting the present invention, all impartial changes that is made according to the scope of the invention and improvement etc., all should
Still belong within covering scope of the present invention.
Claims (6)
1. a kind of new flame reaction teaching aid, including inner shell（20）, the inner shell（20）On be provided with combustion chamber（21）, the combustion
Burn chamber（21）Side is provided with ignition structure（30）, the combustion chamber（21）Inside it is provided with and extend into inner shell（20）Internal wick
（50）, the inner shell（20）Inside is filled with oil absorbent material（40）, it is characterised in that the oil absorbent material（40）It is molten that methanol is inside impregnated with
Liquid.
2. a kind of new flame reaction teaching aid as claimed in claim 1, it is characterised in that the oil absorbent material（40）Inside it is impregnated with
The mixed liquor that the metal salt solution of flame reaction is constituted with methanol.
3. a kind of new flame reaction teaching aid as claimed in claim 2, it is characterised in that the metal salt solution and methanol group
The volume ratio of the mixed liquor for becoming is 1:0.5～4.
4. a kind of new flame reaction teaching aid as claimed in claim 3, it is characterised in that the wick（50）Using asbestos system
Become.
5. a kind of new flame reaction teaching aid as claimed in claim 1, it is characterised in that the combustion chamber（21）Side opens up
There is air vent（22）.
6. a kind of new flame reaction teaching aid as claimed in claim 1, it is characterised in that the inner shell（20）Shell is cased with outward
（10）, the inner shell（20）On be provided with and can cover combustion chamber（21）Upper lid（30）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736596.0A CN106448396A (en) | 2016-08-26 | 2016-08-26 | Novel flame reaction teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736596.0A CN106448396A (en) | 2016-08-26 | 2016-08-26 | Novel flame reaction teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106448396A true CN106448396A (en) | 2017-02-22 |
Family
ID=58182163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610736596.0A Pending CN106448396A (en) | 2016-08-26 | 2016-08-26 | Novel flame reaction teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106448396A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2421289Y (en) * | 2000-05-30 | 2001-02-28 | 黄河 | Liquid colour flame candle |
| CN1701202A (en) * | 2003-02-27 | 2005-11-23 | 齐波制造公司 | Interference-free cam for hinged-lid lighters |
| CN205264208U (en) * | 2016-01-05 | 2016-05-25 | 聂秉元 | Flame reaction experiment demonstration ware |
-
2016
- 2016-08-26 CN CN201610736596.0A patent/CN106448396A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2421289Y (en) * | 2000-05-30 | 2001-02-28 | 黄河 | Liquid colour flame candle |
| CN1701202A (en) * | 2003-02-27 | 2005-11-23 | 齐波制造公司 | Interference-free cam for hinged-lid lighters |
| CN205264208U (en) * | 2016-01-05 | 2016-05-25 | 聂秉元 | Flame reaction experiment demonstration ware |
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|---|---|---|---|
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
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| RJ01 | Rejection of invention patent application after publication |