Notice 1.Do preparation on subject matter,principles and protocol of the experiment before going to the laboratory: 2.Operate accurately,observe carefully,record veraciously during the experiment; 3,Accomplish report and clean the bench after the experiment: 4.Obey the disciplines of the lab,keep safety and take care of instruments; 5.Ware experimental overcoat,do not ware sandal,bring this booklet and your repor notebook with you; 6.Check the quality and quantity of your experiment suite before and after the experiment and tell the technician if there is any mar; 7.Clean your xperimental suite and discard garbage,especially dangerous castoff. under the teacher's guidance; 8.Clean the laboratory when you are on the duty of the day. How to write experimental record and experimental report Experimental report should include five parts,purpose,principle,operation. esu and disc sion Before ach purpose,principle and operation of the experiment briefly on your report notebook The record during the experiment should be veracious and timely,which includes reagents (volume,concentration etc.),conditions (temperature,pressure etc.). instruments(name,type etc.),operations(shake,churn up etc.)and phenomena(color precipitation, lata on the indic r and so on).Data processing ar nd analyzing and result summarizing should be done in the result part of the experimenta report. discussion part,you might want to focus on the analysis of experimental methods, results phenomena and errors,and your taste and comments. Experimental record and report should be clear,logistic,concise and no disorder alteration. 3