Molecule motion demonstration experiment apparatus
An experimental device and molecular movement technology, applied in the direction of educational appliances, instruments, teaching models, etc., can solve the problems of volatile and pungent odor of concentrated ammonia water, great influence of ammonia gas concentration, pollution of students' physical and mental health in the teaching environment, etc. , achieve the effect of saving medicine, easy operation and reducing pollution
Inactive Publication Date: 2016-09-28
田阳县初级中学
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Problems solved by technology
[0002] When exploring and learning the knowledge point of "continuous motion of molecules", a large beaker is used in the textbook to cover a small beaker containing concentrated ammonia water and phenolphthalein test solution respectively. The amount of medicine required for the experiment is large, and the concentrated ammonia water is volatile. and irritating odor, and the experiment is not carried out in a closed device, the ammonia concentration in the classroom is likely to be too high during the experiment, which will affect the teaching environment and students' physical and mental health, and pollute the environment, so it is not suitable for students to conduct group experiments
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[0023] The specific implementation of the invention will be further described below in conjunction with the accompanying drawings.
[0024] Such as figure 1 As shown, the molecular motion demonstration experimental device includes a device body, which includes a transparent corrosion-resistant test tube 1. The test tube 1 is processed into a W-shaped glass tube with a diameter of 7 mm by an alcohol blowtorch. There are openings at both ends of the test tube 1, and corresponding There is a rubber stopper 2. Wherein, the bottom of the left end of the test tube 1 holds concentrated ammonia water 3 , and the bottom of the right end holds a phenolphthalein test solution 4 .
[0025] During the demonstration, first fix the test tube 1 on the fixed frame, open the rubber stopper 2; first drop the phenolphthalein test solution 4 to the opening of the right end of the test tube 1, and cover the rubber stopper 2; then add concentrated ammonia water dropwise to the opening of the left e...
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The invention discloses a molecule motion demonstration experiment apparatus and belongs to the technical field of teaching experiment apparatuses. The apparatus includes an apparatus main body which includes a transparent corrosion resisting test tube. The test tube assumes a W shape with two ends each perforated with an opening having a rubber bung thereon. The bottom part of a left end of the test tube is loaded with a concentrated ammonia liquor, and the bottom of a right end is loaded with a phenolphthalein test solution. According to the invention, the apparatus improves current experiment devices such as glass test tubes, has excellent sealing, and is safe and reliable.
Description
technical field [0001] The invention relates to the technical field of teaching experiment devices, in particular to a molecular motion demonstration experiment device. Background technique [0002] When exploring and learning the knowledge point of "continuous motion of molecules", a large beaker is used in the textbook to cover a small beaker containing concentrated ammonia water and phenolphthalein test solution respectively. The amount of medicine required for the experiment is large, and the concentrated ammonia water is volatile. And the experiment is not carried out in a closed device. During the experiment, the concentration of ammonia in the classroom is likely to be too high, which will affect the teaching environment and the physical and mental health of the students, and pollute the environment. It is not suitable for students to conduct group experiments. So how can we prove that "molecules are constantly moving" while reducing the amount of medicines and air po...
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IPC IPC(8): G09B23/12
CPCG09B23/12
Inventor 卢正兴唐万宁覃倩珍
Owner 田阳县初级中学