第九天化学知识点之探究性试验(国外英文资料).docVIP

第九天化学知识点之探究性试验(国外英文资料) The ninth day, chemistry knowledge point of inquiry experiment,.Txt with happy to run, attentively listen to, use thinking to develop, with hard struggle, with target to measure, use love to live. More money, less money, often good! It is better to be young and healthy! His home is rich, harmonious. Ninth days Add apology: because of my oversight, the last topic of the previous lecture, strengthen training 3, forget to write the answer, and I will fill it up immediately! Answer: (1) the long neck funnel flask; (2) marble or limestone, dilute hydrochloric acid; (3) to prevent the escape of gas from the funnel; (4) a colorless solution turns red, pipe mouth bubbles; a white haze, but also a lot of bubbles. A flask has been added this year to the basic experimental apparatus: flasks - primarily for use (round flasks on the left and flask flasks on the right) for basic purposes (1) reactor between liquid and solid or liquid. (2) assembly of gas reaction generator (at ordinary temperature, flat bottomed flask and heating round round flask) Note: (1) the injected liquid shall not exceed the volume of 2/3. (2). When heated, the asbestos net shall be used to make it evenly heated An exploratory experiment in chemical experiment (three) Many students are consulting, say, inquiry experiment questions in the end how to do, can not lose points! Here I first answer some of the doubts in your mind, and then talk about two topics. Then, we practice a few questions, familiar with the problem solving methods. Question 1. Why does the experiment lose 2~3 points each time? 2, I think I understand all of this, but there is always a place not to see, so we are wrong, how to do? Question 3. Why should I deduct points in my own language? Whats wrong with me? Question 4, how should the research question be practiced? How much does it take to practice? A 1 experiment every time points must have psychological factors: because each examination experiment lost points, th