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Mass conservation law tester

A law of mass conservation and tester technology, applied in the field of daily necessities, can solve problems such as inaccurate experimental results and air flow

Inactive Publication Date: 2020-03-13
韩玉霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The first demonstration experiment of the law of conservation of mass in the current junior high school chemistry textbook (PEP Edition) (that is, the experiment of measuring the mass of red phosphorus before and after combustion), the experiment found that during the combustion of red phosphorus, the rubber Heating causes the air in the Erlenmeyer flask to flow, resulting in inaccurate experimental results

Method used

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  • Mass conservation law tester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] Insert a glass tube with a balloon (6) on the cork (5), put a piece of white phosphorus (3) the size of mung bean into the burning spoon (2), adjust the balance so that the pointer of the balance remains balanced, and heat the crude oil with an alcohol lamp. Copper wire (4), can observe white phosphorus to burn immediately, produces dense white smoke in conical flask (1), and the pointer of balance is in balance state all the time. This proves that the sum of the masses of the substances participating in the reaction is equal to the sum of the masses of the substances produced after the reaction.

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Abstract

The invention relates to the technical field of daily necessities, in particular to a mass conservation law tester. The mass conservation law tester comprises a conical glass bottle, a glass tube witha balloon, a heat transfer thick copper wire and a combustion spoon formed by hammering the thick copper wire to be flat. An alcohol lamp is used for heating the thick copper wire, white phosphorus is observed to begin to burn, and a reaction container does not need to be moved in the reaction process, so that the experiment time is shortened, and the experiment feasibility is enhanced.

Description

technical field [0001] The invention relates to the technical field of daily necessities, in particular to a mass conservation law tester. Background technique [0002] The first demonstration experiment of the law of conservation of mass in the current junior high school chemistry textbook (PEP Edition) (that is, the experiment of measuring the mass of red phosphorus before and after combustion), the experiment found that during the combustion of red phosphorus, the rubber Heating causes the air in the Erlenmeyer flask to flow, resulting in inaccurate experimental results. Inserting a glass tube with a balloon on the cork can prevent white phosphorus from releasing heat when it burns, causing the gas to expand and flush the cork away, causing the experiment to fail; it is carried out in a closed instrument to prevent the pollution of the combustion product to the environment; in the reaction The reaction vessel does not need to be moved during the process, which not only s...

Claims

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Application Information

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IPC IPC(8): G09B23/24
CPCG09B23/24
Inventor 不公告发明人
Owner 韩玉霞