They must be properly labelled and the data used must be included as well. If a spreadsheet was used, the tabluar data can be printed out and used for the data sheet, so long as the data is identified with suitable labels. Any questions asked in the experiment must be answered. Copies of your lab notebook pages must also be attached. In many ways the lab is a dangerous place.
Most chemicals are toxic, and many are volatile.
Glassware is fragile and can cause severe cuts. Open flames are fire hazards. However, the most important aspect of lab safety is you . Careful handling and use of chemicals and equipment not only is good practice and aids in getting good results, it is the foundation of a safe laboratory. With this in mind, the following safety rules should be followed.