化学提纲1（Chemical outline 1）.doc

化学提纲1（Chemical outline 1） Chemical review outline Unit 1 walks into the chemical world Chemistry is the science of the composition, structure, nature and change of substance. The principle of the use of medicine 1. Use drugs to make three no : you cant use your hands to contact drugs directly, you cant put your nostrils to the container to smell the medicine, and you cant taste any medicine. 2, taking drugs save: taking the dosage of the drug should be strictly stipulated in the laboratory, if did not specify the dosage, generally take the least amount, namely liquid take 1 to 2 ml, solid as long as the cover the bottom of the tube. 3, use the leftover medicine to make three no : that is, cant be put back in the original bottle, dont throw away at will, cant take out the laboratory, should put in the designated container. 4. If the liquid is splattered in the eye, rinse immediately with water. The use of solid drugs 1. Solid particles with large block or dense density are usually picked up with tweezers. A key (or a paper slot) for powder or granular medicine. 3. Used tweezers or keys should be cleaned immediately with clean paper. 2. The use of liquid medicine (stored in a flask) 1. Use of a small amount of liquid medicine The dropper of the absorbant should be suspended vertically above the instrument, and the medicine liquid is dropped into the instrument to accept the liquid. Do not let the drip pipe contact the wall of the instrument. Do not place the tube flat on the bench or other place to avoid contamination of the drip pipe; Other reagents can not be redrawn with unwashed dropper. (the dropper on the drop bottle cannot be cross-used or developed.) 2. When taking the test fluid from the bottle, the bottle stopper should be taken down and placed on the table. When pouring the liquid, the label should be made to the palm of the hand, the mouth of the bottle should be close to the mouth of the tube or the mouth of the instrument, so as to prevent the flow of th