CN106485993A - Linesless charcoal reductive copper oxide teaching and experiment method and its equipment - Google Patents
Linesless charcoal reductive copper oxide teaching and experiment method and its equipment Download PDFInfo
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- CN106485993A CN106485993A CN201610995978.5A CN201610995978A CN106485993A CN 106485993 A CN106485993 A CN 106485993A CN 201610995978 A CN201610995978 A CN 201610995978A CN 106485993 A CN106485993 A CN 106485993A
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- 239000003610 charcoal Substances 0.000 title claims abstract description 69
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 239000005751 Copper oxide Substances 0.000 title claims abstract description 66
- 229910000431 copper oxide Inorganic materials 0.000 title claims abstract description 66
- 238000002474 experimental method Methods 0.000 title claims abstract description 57
- 230000002829 reductive effect Effects 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 112
- 239000010453 quartz Substances 0.000 claims abstract description 98
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 98
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 21
- 238000005352 clarification Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 13
- 230000004044 response Effects 0.000 claims abstract description 11
- 239000000376 reactant Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 9
- 239000004575 stone Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 229910002090 carbon oxide Inorganic materials 0.000 claims 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 18
- 229910052802 copper Inorganic materials 0.000 description 18
- 239000010949 copper Substances 0.000 description 18
- 238000006243 chemical reaction Methods 0.000 description 13
- 238000001816 cooling Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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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)
- Computational Mathematics (AREA)
- 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)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a kind of Linesless charcoal reductive copper oxide teaching and experiment method and its equipment, comprise the following steps：A, preheating alcohol blast burner；B, charcoal powder and copper oxide mixture are put into quartz test tube（2）In, quartz test tube（2）One end sealing member（1）Sealing, quartz test tube（2）The other end passes through connecting tube（3）Connect airway（5）；C, by quartz test tube（2）Fixing, by airway（5）Stretch in the container equipped with clarification lime water, then with alcohol blast burner to quartz test tube（2）Heated；After D, question response terminate, by quartz test tube（2）Sealing, cools down quartz test tube（2）；E, taking-up reactant, observation experiment result.The invention enables Linesless charcoal reductive copper oxide experimental implementation is simple and safe, experimentation phenomenon and result are all fairly obvious, and test overall process take short, less than 3 minutes, success rate reaches 100%, is conducive to improving the interest of Students ' Learning chemistry and teaching popularization and application.
Description
Technical field
The present invention relates to teaching and experiment method and its equipment, particularly Linesless charcoal reductive copper oxide teaching and experiment method and its set
Standby.
Background technology
Experiment is the basis of natural sciences.In experimentation, student can beat one's brains and start to be operated, improve ability of thinking with
Manipulative ability；Students ' Learning scientific knowledge can be helped again, strengthen analysis and problem-solving ability.So middle school teaching experiment is
Carry out the important method of Science Teaching, be the necessary means of training experiment technical ability and training student science integration quality, be
The important content of middle school teaching.The education experiment of Linesless charcoal reductive copper oxide is the teaching of ninth grade chemistry first volume chapter 6 problem 1
Content.
The education experiment of Linesless charcoal reductive copper oxide is from the beginning of national period.But the tool that all the time, experiment exists
Have that potential safety hazard, phenomenon are inconspicuous, experimental period is oversize, the very low problem of success rate fails to obtain effectively solving, long-standing problem
Faculty.
The education experiment of Linesless charcoal reductive copper oxide is primarily present following problem at present：1st, it is used in experimentation reacting
Test tube easily burnt, and teaching material does not illustrate quality proportioning and the consumption of Linesless charcoal and copper oxide, if adding charcoal powder
Content is too high, consumption excessive, the test tube space being adopted is big, and inner air quality is many, experiment it may happen that dust explosion,
Produce teaching safety hidden danger；2nd, experiment be difficult to successfully, and experimental phenomena inconspicuous it is difficult to obtain light, bulk elemental copper with
And the lime water being difficult to observe by clarifying becomes cloudy phenomenon, it is unfavorable for the reproducibility of students carbon, understands abstract oxidation also
Former reaction；3rd, experiment spent time is longer, and teaching efficiency is low, is unfavorable for improving the interest of Students ' Learning chemistry and teaching is promoted
Application.
Content of the invention
It is an object of the invention to, a kind of Linesless charcoal reductive copper oxide teaching and experiment method and its equipment are provided.It makes wood
Charcoal reductive copper oxide experimental implementation is simple and safe, and experimentation phenomenon and result are all fairly obvious, and it is time-consuming to test overall process
Short, less than 3 minutes, success rate reached 100%, was conducive to improving the interest of Students ' Learning chemistry and teaching popularization and application.
Technical scheme：A kind of Linesless charcoal reductive copper oxide teaching and experiment method, comprises the following steps：
A, preheating alcohol blast burner；
B, charcoal powder and copper oxide mixture are put in quartz test tube, quartz test tube one end is sealed with sealing member, quartz
The test tube other end connects airway by connecting tube；
C, quartz test tube is fixed, airway is stretched in the container equipped with clarification lime water, then with alcohol blast burner to stone
English test tube is heated；
After D, question response terminate, quartz test tube is sealed, cool down quartz test tube；
E, taking-up reactant, observation experiment result.
Aforesaid Linesless charcoal reductive copper oxide teaching and experiment method, the quality proportioning of charcoal powder and copper oxide in described step B
Scope is 1:9-11.
Aforesaid Linesless charcoal reductive copper oxide teaching and experiment method, in described step B, charcoal powder and copper oxide mixture is total
Quality is 1-3g.
Aforesaid Linesless charcoal reductive copper oxide teaching and experiment method, in described step B, the internal diameter of quartz test tube is 0.8-
1.2cm, length is 12-20cm.
Aforesaid Linesless charcoal reductive copper oxide teaching and experiment method, in described step C, heating-up temperature is 800 DEG C -1000 DEG C,
Heat time heating time is 30-100s.
Aforesaid Linesless charcoal reductive copper oxide teaching and experiment method, in described step D, cools down quartz test tube with cold water.
A kind of equipment for aforesaid Linesless charcoal reductive copper oxide teaching and experiment method, including quartz test tube, quartz test tube
One end is provided with sealing member.
Aforesaid Linesless charcoal reductive copper oxide teaching experimental equipment, the described quartz test tube other end connects inducing QI by connecting tube
Pipe, airway stretches in the container equipped with clarification lime water, and connecting tube is provided with tongs.
Aforesaid Linesless charcoal reductive copper oxide teaching experimental equipment, described connecting tube includes L-type glass tubing, and L-type glass tubing is left
End insertion quartz test tube right-hand member is connected, and there is airway L-type glass tubing lower end by hose connection, and flexible pipe accompanies tongs；
Or described connecting tube is rubber hose, it is directly sleeved on quartz test tube and airway.
Aforesaid Linesless charcoal reductive copper oxide teaching experimental equipment, described sealing member is plug-in type test tube cap or is to accompany sealing
The rubber hose of folder.
Compared with prior art, in order to allow Linesless charcoal reductive copper oxide experiment effect substantially it is easy to operation, and ensure and imparted knowledge to students
Safety in journey, the present invention adopts pyroreaction to improve experiment effect, and quartz test tube selected by test tube, will not be burnt in the reaction
Wear, optimize Linesless charcoal with copper oxide quality proportioning and control Linesless charcoal and copper oxide mixture gross mass, control is used simultaneously
The size of the pipe diameter size of quartz test tube and heating-up temperature is so that will not produce explosion phenomenon under pyroreaction.The present invention's
Experimental technique, success rate reaches 100% moreover it is possible to see the high light bulk copper of copper content, and student can be allowed to observe directly reality
Test effect it is ensured that experimentation no potential safety hazard, and experimental period is less than 3 minutes, simple to operate, be conducive to improving student and learn
Practise interest and the teaching popularization and application of chemistry.Inventor has carried out following series of experiments, to prove the effect of this experimental technique
Really：
Gross mass is identical, and the charcoal powder of different quality proportioning and copper oxide mixture under equal conditions carry out experiment behaviour
Make, the concrete data obtaining is as shown in table 1.
Table 1：The charcoal powder of different quality proportioning and copper oxide mixture under equal conditions carry out the reaction of experimental implementation
Data
As can be found from Table 1 when the quality proportioning of charcoal powder and copper oxide is 1:When 7 or 8, contain not in obtained product
The Linesless charcoal of reaction is more, and bright simple substance copper billet is less；When the quality proportioning of charcoal powder and copper oxide is 1:When 12 or 13, obtained
More containing unreacted copper oxide in product, produced simple substance copper billet is equally less, and experiment effect is undesirable.Charcoal powder and
The quality proportioning scope of copper oxide is 1:9-11 so that in final products therefrom copper content higher, can be from product mixtures
See more bright simple substance copper billet it is easy to be imparted knowledge to students with experimental result.
By homogenous quantities proportioning, (quality proportioning of charcoal powder and copper oxide is 1:10.5) charcoal powder and copper oxide mixture
Under equal conditions tested, the concrete data obtaining is as shown in table 2.
Table 2：The charcoal powder of different gross masses and copper oxide mixture under equal conditions carry out reaction during experimental implementation
Data
Mixture quality is 0.6g, 0.8g as can be found from Table 2, and the time producing light in experimentation is shorter, and light is not
Bright；And mixture quality is 3.2g, 3.4g, although the time producing light in experimentation is long, the effect of light is not so good as 1-3g
Experiment effect bright.The gross mass of charcoal powder and copper oxide mixture is 1-3g so that mixture is fully subject in quartz test tube
Heat is reacted, simultaneously cost-effective.
Under equal conditions carry out Linesless charcoal reductive copper oxide experiment with the quartz test tube without internal diameter, the concrete data obtaining
As shown in table 3.
Table 3：Under equal conditions carry out response data during experimental implementation with the quartz test tube of different inner diameters
As can be found from Table 3 using internal diameter be 0.6,0.7 quartz test tube although obtain the preferable product of glossiness with
And the granule of copper is big, but operation is not easy；Using internal diameter be 1.3, the quartz test tube of 1.4cm although processing ease, but raw
Become the glossiness of thing undesirable and granule of copper is little.Quartz test tube internal diameter is 0.8-1.2cm, is facilitating the same of reaction cartridge thing
When moreover it is possible to guarantee that quartz test tube inner air easily drains, obtain the preferable product of glossiness and the granule of copper be big.
Under equal conditions carry out Linesless charcoal reductive copper oxide experiment with the quartz test tube of different length, the concrete data obtaining
As shown in table 4.
Table 4：Under equal conditions carry out response data during experimental implementation with the quartz test tube of different length
Facilitated although picking and placeing material for 8cm, 10cm quartz test tube using length as can be found from Table 4, but be not easy to steady
Admittedly fixing quartz test tube and quartz test tube two ends being attached or closes；The use of length is 22cm, 24cm quartz test tube, though
So it is easy to firm fixing quartz test tube and quartz test tube two ends is attached or closes, but it is inconvenient to pick and place material.Stone
English test tube length is 12-20cm, moreover it is possible to firm fix quartz test tube and to quartz test tube two while conveniently picking and placeing material
End is attached or closes.
Carry out Linesless charcoal reductive copper oxide experiment in equal conditions different temperatures, under the equal conditions different heating time, obtain
Concrete data as shown in table 5.
Table 5：Equal conditions different temperatures, carry out experimental implementation under the equal conditions different heating time when response data
As can be found from Table 5 when being heated or being heated 20s, 25s using 600,700 DEG C although safety, but instead
Thing is answered to also have more or a little unreacted；When being heated using 1100 DEG C, 1200 DEG C or when heating 105s, 110s, though
So reactant reaction is complete, but alcohol blast burner temperature does not reach.Heating-up temperature is 800 DEG C -1000 DEG C, and heat time heating time is 30-
100s is so that reaction safely, fully, is easy to effectively utilizes instructional blocks of time and is shown study.
The airway being connected by connecting tube, produced gas is led to clarification lime water, allows clarification lime water become muddy
Turbid experimental phenomena becomes apparent from.Cooling quartz test tube, accompanies tongs in connecting tube, effectively prevents liquid from flowing backwards, destroys
Experimental result, saves experimental period.
In sum, by the solution of the present invention, the Linesless charcoal reductive copper oxide experiment of ninth grade experiment is deposited all the time
There is potential safety hazard, phenomenon is inconspicuous, experimental period is oversize, the very low problem of success rate obtains effectively solving, be easy to teach
Scholar person is safely and effectively imparted knowledge to students and safety of student joyously learns, and has marked improvement.
Brief description
Fig. 1 is the structural representation of the present invention.
Being labeled as in accompanying drawing：1- sealing member, 2- quartz test tube, 3- connecting tube, 301-L type glass tubing, 302- flexible pipe, 4-
Tongs, 5- airway.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment 1：
A kind of Linesless charcoal reductive copper oxide teaching and experiment method, first preheats alcohol blast burner；Weigh charcoal powder and oxidation copper mass
Proportioning is 1:The mixture 1-3g of 9-11, with experiment spoon put into interior diameter be 0.8-1.2cm, length be 12-20cm quartz examination
In pipe 2；Close quartz test tube 2 one end with sealing member 1, connect quartz test tube 2 and airway 5 with connecting tube 3；Again by quartz test tube
2 are fixed on pallet, in the volumetric flask equipped with clarification lime water for airway 5 other end insertion, quartz test tube 2 are heated,
Heating-up temperature is 800-1000 DEG C, and heat time heating time is 30-100s；After question response terminates, clamp rubber hose 3 with tongs 4, then
Cooling quartz test tube 2；After quartz test tube 2 cooling, take out the reactant in quartz test tube 2, observed.
Embodiment 2：
The present embodiment is optimum embodiment.A kind of Linesless charcoal reductive copper oxide teaching and experiment method, first preheats alcohol blast burner；
Weighing charcoal powder and copper oxide quality proportioning is 1:10.5 mixture 1.5g, with experiment spoon put into interior diameter be 1cm, length be
In the quartz test tube 2 of 18cm；Close quartz test tube 2 one end with plug-in type test tube cap 1, be directly sleeved on quartz examination with rubber hose 3
On pipe 2 other end and airway 5 one end；Again quartz test tube 2 is fixed on pallet, airway 5 other end inserts equipped with clarification
In the volumetric flask of lime water, quartz test tube 2 is heated, heating-up temperature is 1000 DEG C, heat time heating time is 50s；Question response is tied
Shu Hou, clamps rubber hose 3 with tongs 4, directly cools down quartz test tube 2 with cold water；After quartz test tube 2 cooling, take out quartz
Reactant in test tube 2, is observed.
Experimental phenomena：It is heated to 17s, Linesless charcoal and copper oxide start to react, 25s reaction starts acutely, to produce bright light
Continue 20-40s, clarification Calx instant water becomes cloudy, and obtains bright, big block copper.
Embodiment 3：
A kind of Linesless charcoal reductive copper oxide teaching and experiment method, first preheats alcohol blast burner；Weigh charcoal powder and oxidation copper mass
Proportioning is 1:10 mixture 2g, with experiment spoon put into interior diameter be 1cm, length be in the quartz test tube 2 of 16cm；Use plug-in type
Test tube cap 1 closes quartz test tube 2 one end, is directly sleeved on quartz test tube 2 other end and airway 5 one end with rubber hose 3；Again
Quartz test tube 2 is fixed on pallet, in the volumetric flask equipped with clarification lime water for airway 5 other end insertion, to quartz test tube 2
Heated, heating-up temperature is 850 DEG C, heat time heating time is 75s；After question response terminates, clamp rubber hose 3 with tongs 4, use
Cold water directly cools down quartz test tube 2；After quartz test tube 2 cooling, take out the reactant in quartz test tube 2, observed.
Experimental phenomena：It is heated to 30s, Linesless charcoal and copper oxide start to react, 35s reaction starts acutely, to produce bright light
Continue 20 30s, clarification Calx instant water becomes cloudy, and obtains the copper of bright, larger bulk.
Embodiment 4：
A kind of Linesless charcoal reductive copper oxide teaching and experiment method, first preheats alcohol blast burner；Weigh charcoal powder and oxidation copper mass
Proportioning is 1:9 mixture 1g, with experiment spoon put into interior diameter be 0.8cm, length be in the quartz test tube 2 of 12cm；With accompanying
Rubber hose 1 closing quartz test tube 2 one end of tongs, is directly sleeved on quartz test tube 2 other end and airway with rubber hose 3
On 5 one end；Again quartz test tube 2 is fixed on pallet, in the volumetric flask equipped with clarification lime water for airway 5 other end insertion,
Quartz test tube 2 is heated, heating-up temperature is 800 DEG C；Heat time heating time is 60s；After question response terminates, clamped with tongs 4
Rubber hose 3, directly cools down quartz test tube 2 with cold water；After quartz test tube 2 cooling, take out the reactant in quartz test tube 2, enter
Row is observed.
Experimental phenomena：It is heated to 30s, Linesless charcoal and copper oxide start to react, 35s reaction starts acutely, to produce bright light
Continue 12 30s, clarification Calx instant water becomes cloudy, and obtains light, the copper of smaller piece shape.
Embodiment 5：
A kind of Linesless charcoal reductive copper oxide teaching and experiment method, first preheats alcohol blast burner；Weigh charcoal powder and oxidation copper mass
Proportioning is 1:11 mixture 3g, with experiment spoon put into interior diameter be 1.2cm, length be in the quartz test tube 2 of 20cm；With insertion
Formula test tube cap 1 closes quartz test tube 2 one end, and quartz test tube 2 other end is connected with L-type glass tubing 301 left end, L-type glass tubing
301 lower ends are connected with airway 5 by flexible pipe 302；Again quartz test tube 2 is fixed on pallet, airway 5 other end insertion dress
Have in the volumetric flask of clarification lime water, quartz test tube 2 is heated, heating-up temperature is 1000 DEG C；Heat time heating time is 50s；Treat
After reaction terminates, clamp flexible pipe 302 with tongs 4, directly cool down quartz test tube 2 with cold water；After quartz test tube 2 cooling, take out
Reactant in quartz test tube 2, is observed.
Experimental phenomena：It is heated to 17s, Linesless charcoal and copper oxide start to react, 20s reaction starts acutely, to produce bright light
Continue 12 30s, clarification Calx instant water becomes cloudy, and obtains bright, very oarse-grained copper.
Operation principle：Preheating alcohol blast burner, charcoal powder and copper oxide mixture is put in quartz test tube 2, quartz test tube 2
One end sealing member 1 seals, and quartz test tube 2 other end connects airway 5 by connecting tube 3, after fixing for quartz test tube 2, uses
Alcohol blast burner heats to quartz test tube 2, after question response terminates, clamps connecting tube 3 with tongs 4, cools down quartz test tube 2,
Observation experiment result.
Claims (10)
1. a kind of Linesless charcoal reductive copper oxide teaching and experiment method it is characterised in that：Comprise the following steps：
Preheating alcohol blast burner；
Charcoal powder and copper oxide mixture are put into quartz test tube（2）In, quartz test tube（2）One end sealing member（1）Sealing, stone
English test tube（2）The other end passes through connecting tube（3）Connect airway（5）；
By quartz test tube（2）Fixing, by airway（5）Stretch in the container equipped with clarification lime water, then with alcohol blast burner to stone
English test tube（2）Heated；
After question response terminates, by quartz test tube（2）Sealing, cools down quartz test tube（2）；
Take out reactant, observation experiment result.
2. Linesless charcoal reductive copper oxide teaching and experiment method according to claim 1 it is characterised in that：Wood in described step B
The quality proportioning scope of powdered carbon and copper oxide is 1:9-11.
3. Linesless charcoal reductive copper oxide teaching and experiment method according to claim 1 it is characterised in that：Wood in described step B
The gross mass of powdered carbon and copper oxide mixture is 1-3g.
4. Linesless charcoal reductive copper oxide teaching and experiment method according to claim 1 it is characterised in that：Stone in described step B
English test tube（2）Internal diameter be 0.8-1.2cm, length be 12-20cm.
5. Linesless charcoal reductive copper oxide teaching and experiment method according to claim 1 it is characterised in that：In described step C, plus
Hot temperature is 800 DEG C -1000 DEG C, and heat time heating time is 30-100s.
6. Linesless charcoal reductive copper oxide teaching and experiment method according to claim 1 it is characterised in that：In described step D, use
Cold water cools down quartz test tube（2）.
7. a kind of equipment for the Linesless charcoal reductive copper oxide teaching and experiment method according to any one of claim 1-6, its
It is characterised by：Including quartz test tube（2）, quartz test tube（2）One end is provided with sealing member（1）.
8. Linesless charcoal reductive copper oxide teaching experimental equipment according to claim 7 it is characterised in that：Described quartz test tube
（2）The other end passes through connecting tube（3）Connect airway（5）, airway（5）Stretch in the container equipped with clarification lime water, connect
Pipe（3）It is provided with tongs（4）.
9. Linesless charcoal reductive copper oxide teaching experimental equipment according to claim 8 it is characterised in that：Described connecting tube（3）
Including L-type glass tubing（301）, L-type glass tubing（301）Left end inserts quartz test tube（2）Right-hand member is connected, L-type glass tubing（301）
Flexible pipe is passed through in lower end（302）It is connected with airway（5）, flexible pipe（302）On accompany tongs（4）；Or described connecting tube（3）For
Rubber hose, is directly sleeved on quartz test tube（2）With airway（5）On.
10. Linesless charcoal reductive copper oxide teaching experimental equipment according to claim 7 it is characterised in that：Described sealing member（1）
Rubber hose for plug-in type test tube cap or for accompanying tongs.
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| CN201610995978.5A CN106485993A (en) | 2016-11-12 | 2016-11-12 | Linesless charcoal reductive copper oxide teaching and experiment method and its equipment |
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| CN108922354A (en) * | 2018-07-05 | 2018-11-30 | 商洛学院 | A kind of experimental method of graphene reductive copper oxide |
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