CN208141663U - A kind of main component confirming egg shell is the experimental provision of carbonate - Google Patents
A kind of main component confirming egg shell is the experimental provision of carbonate Download PDFInfo
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- CN208141663U CN208141663U CN201820573749.9U CN201820573749U CN208141663U CN 208141663 U CN208141663 U CN 208141663U CN 201820573749 U CN201820573749 U CN 201820573749U CN 208141663 U CN208141663 U CN 208141663U
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- egg shell
- drying tube
- carbonate
- main component
- syringe
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model provide it is a kind of confirm egg shell main component be carbonate experimental provision, be primarily characterized in that：It is by the beaker equipped with clarification limewash（1）, syringe equipped with dilute hydrochloric acid（2）, rubber stopper（3）, drying tube（4）, be equipped with egg shell（6）Small test tube（5）, copper mesh（7）Composition.Equipped with egg shell（6）Small test tube（5）It is placed on drying tube vertically（4）In copper mesh（7）On, band syringe（2）Rubber stopper（3）Stopper drying tube（4）Biggish nozzle, drying tube（4）Lesser nozzle protrudes into the beaker equipped with clarification limewash（1）In.Textbook experiment device existing defects：Generation this phenomenon of bubble is only reacted with dilute hydrochloric acid from egg shell and generates carbon dioxide gas without it can determine that, to cannot confirm that the main component of egg shell is exactly carbonate.Textbook device can be overcome the shortcomings of using the utility model, and easy to use, phenomenon is obvious, and convincingness is strong.
Description
One, technical field
The utility model category chemical field, is related to a kind of chemical experiment device, particularly for demonstrating junior middle school chemistry class
The experiment that egg shell is reacted with dilute hydrochloric acid in sheet.
Two, background technique
The ninth grade chemistry textbook volume two published Shanghai education publishing house in November, 2013 exercise the 12nd of page 67 is inscribed：By one
Into the water, egg sinks under water a Fresh Egg.After appropriate concentrated hydrochloric acid is added, egg will appear floating, sinking, float again,
The phenomenon that sinking again, it is repeated multiple times.Explanation is generally：The main component of egg shell is carbonate, and carbonate is reacted with dilute hydrochloric acid
Carbon dioxide gas is generated, bubble is attached to the buoyancy that egg shell surface causes egg to be subject to and increases, therefore egg floats, and works as chicken
Bubbles burst when egg floats on liquid level, the buoyancy that egg is subject to reduces, therefore egg sinks again, repeatedly repeatedly.Textbook is real
Experiment device existing defects：Generation this phenomenon of bubble is only reacted with dilute hydrochloric acid from egg shell and generates carbon dioxide without it can determine that
Gas, to cannot confirm that the main component of egg shell is exactly carbonate.
Three, utility model content
The utility model aim is that the main component for providing a kind of confirmation egg shell is the experimental provision of carbonate.It uses
The utility model phenomenon is obvious, can overcome the defect of textbook experiment device, and convincingness is strong.The utility model is applicable not only to teacher
Lecture experiment is done on classroom, but also is applicable in student and is done grouping experiment.
The purpose of this utility model is realized by the following method：
A kind of main component confirming egg shell is the experimental provision of carbonate, is primarily characterized in that：It is by equipped with clear
The beaker of clear limewash（1）, syringe equipped with dilute hydrochloric acid（2）, rubber stopper（3）, drying tube（4）, be equipped with egg shell（6）It is small
Test tube（5）, copper mesh（7）Composition.
Equipped with egg shell（6）Small test tube（5）It is placed on drying tube vertically（4）In copper mesh（7）On, band syringe（2）
Rubber stopper（3）Stopper drying tube（4）Biggish nozzle, drying tube（4）Lesser nozzle protrudes into the burning equipped with clarification limewash
Cup（1）In.
Experimentation：First connect instrument, the air-tightness of check device.Copper mesh（7）It is placed on drying tube（4）In, then
Small test tube is put into after appropriate egg shell is ground（5）In, egg shell will be housed（6）Small test tube（5）It is placed on drying tube vertically
（4）In copper mesh（7）On.By syringe（2）Syringe needle pierce through rubber stopper（3）, use syringe（3）Appropriate dilute hydrochloric acid is drawn, is used
Band syringe（2）Rubber stopper（3）Stopper drying tube（4）Biggish nozzle.In beaker（1）It is middle to fill appropriate clear limewash,
By drying tube（4）Lesser nozzle protrudes into the beaker equipped with clarification limewash（1）In.When experiment, syringe is touched（2）, in right amount
Dilute hydrochloric acid instill small test tube（5）In with egg shell（6）Contact, at this moment it can be seen that：Egg shell（6）There is bubble generation on surface；
Drying tube（4）That lesser end pipe mouth has bubble to emerge, beaker（1）In clear limewash become cloudy.This is because egg shell
Main component be carbonate, dilute hydrochloric acid and carbonate reaction generate carbon dioxide gas, carbon dioxide gas and clarification lime
The reason of precipitation of calcium carbonate not soluble in water is generated after water reaction.The above phenomenon sufficiently proves that the main component of egg shell is carbon
Hydrochlorate.
The beneficial effects of the utility model are：1, device is simple, easy to use, and phenomenon is obvious, and convincingness is strong, can sufficiently demonstrate,prove
The main component of bright egg shell is carbonate.2, the utility model is versatile, can reuse, and has both been applicable on classroom and has done
Lecture experiment, and be applicable in student and do grouping experiment.
Four, Detailed description of the invention
Fig. 1 is the structure chart of the utility model.
Mark in figure respectively indicates：
（1）Beaker equipped with clarification limewash（2）Syringe equipped with dilute hydrochloric acid（3）Rubber stopper（4）Drying tube（5）
Small test tube（6）Egg shell（7）Copper mesh
Five, specific embodiment
The utility model is described in further detail With reference to embodiment：
A kind of main component confirming egg shell is the experimental provision of carbonate, is primarily characterized in that：It is by equipped with clear
The beaker of clear limewash（1）, syringe equipped with dilute hydrochloric acid（2）, rubber stopper（3）, drying tube（4）, be equipped with egg shell（6）It is small
Test tube（5）, copper mesh（7）Composition.
Equipped with egg shell（6）Small test tube（5）It is placed on drying tube vertically（4）In copper mesh（7）On, band syringe（2）
Rubber stopper（3）Stopper drying tube（4）Biggish nozzle, drying tube（4）Lesser nozzle protrudes into the burning equipped with clarification limewash
Cup（1）In.
The application method of the utility model：First connect instrument, the air-tightness of check device.Copper mesh（7）It is placed on drying
Pipe（4）In, small test tube is put into after then appropriate egg shell is ground（5）In, egg shell will be housed（6）Small test tube（5）Vertically
It is placed on drying tube（4）In copper mesh（7）On.By syringe（2）Syringe needle pierce through rubber stopper（3）, use syringe（3）It draws suitable
Dilute hydrochloric acid is measured, with band syringe（2）Rubber stopper（3）Stopper drying tube（4）Biggish nozzle.In beaker（1）Middle dress is appropriate clear
Clear limewash, by drying tube（4）Lesser nozzle protrudes into the beaker equipped with clarification limewash（1）In.When experiment, injection is touched
Device（2）, suitable dilute hydrochloric acid instillation small test tube（5）In with egg shell（6）Contact, at this moment it can be seen that：Egg shell（6）Surface has
Bubble generates；Drying tube（4）That lesser end pipe mouth has bubble to emerge, beaker（1）In clear limewash become cloudy.This be because
Main component for egg shell is carbonate, and dilute hydrochloric acid and carbonate reaction generate carbon dioxide gas, carbon dioxide gas with
The reason of precipitation of calcium carbonate not soluble in water is generated after limewash reaction.The above phenomenon sufficiently proves the main component of egg shell
It is carbonate.The utility model has the advantages that：Device is simple, easy to use, and phenomenon is obvious, and convincingness is strong, can sufficiently prove chicken
The main component of eggshell is carbonate；It is versatile, it can reuse, not only be applicable on classroom and do lecture experiment, but also be applicable in
Student does grouping experiment.
Claims (1)
1. a kind of main component for confirming egg shell is the experimental provision of carbonate, it is primarily characterized in that：It is by equipped with clarification
The beaker of limewash（1）, syringe equipped with dilute hydrochloric acid（2）, rubber stopper（3）, drying tube（4）, be equipped with egg shell（6）Lab scale
Pipe（5）, copper mesh（7）Composition is equipped with egg shell（6）Small test tube（5）It is placed on drying tube vertically（4）In copper mesh（7）On, band
Syringe（2）Rubber stopper（3）Stopper drying tube（4）Biggish nozzle, drying tube（4）Lesser nozzle is protruded into equipped with clarification stone
The beaker of buck（1）In.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820573749.9U CN208141663U (en) | 2018-04-22 | 2018-04-22 | A kind of main component confirming egg shell is the experimental provision of carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820573749.9U CN208141663U (en) | 2018-04-22 | 2018-04-22 | A kind of main component confirming egg shell is the experimental provision of carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208141663U true CN208141663U (en) | 2018-11-23 |
Family
ID=64293298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820573749.9U Expired - Fee Related CN208141663U (en) | 2018-04-22 | 2018-04-22 | A kind of main component confirming egg shell is the experimental provision of carbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208141663U (en) |
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2018
- 2018-04-22 CN CN201820573749.9U patent/CN208141663U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181123 Termination date: 20190422 |