Abstract
The comprehensive designing experiment is very important to train the students’ scientific thinking ability and improve the students’ comprehensive quality in inorganic chemistry experiment. This article introduces a kind of teaching method which can cultivate students’ experimental design capacity. By guiding the student to explore the design strategy and idea in comprehensive design experiment, the article focuses on the experiment “preparation of potassium nitrate by using double decomposition method” as a case.
Highlights
Chemistry is a science based on experiment
By guiding the student to explore the design strategy and idea in comprehensive design experiment, the article focuses on the experiment “preparation of potassium nitrate by using double decomposition method” as a case
In the student mind, the experimental design strategies and methods have been obvious: The experiment of potassium nitrate is prepared with potassium chloride and sodium nitrate as raw materials via double decomposition method, the reaction design basis is as follows: NaNO3+KCl===NaCl+KNO3, this reaction is reversible, so it can change the reaction direction to the right
Summary
Received: April 5, 2012 Accepted: May 27, 2012 Online Published: August 17, 2012 doi:10.5539/ass.v8n11p160.
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