化学仪器（Chemical instrument）.docVIP

化学仪器（Chemical instrument） 1, the instrument used (instrument name can not write typos) A: not heating: cylinder, gas collecting bottle, funnel, thermometer, bottle, dish, jar, small mouth bottles B: direct heating: test tubes, evaporating pans, crucibles, and burning spoons C: indirect heating: beaker, flask, conical flask (1) the test tube is usually used as a reaction container for a small amount of reagent. It can also be used as a container for collecting small amount of gas or a generator for small gas (2) the beaker is mainly used for dissolving solid substance, preparing solution, and diluting and concentrating the solution (3) flasks ---- round bottomed flasks, flat bottomed flasks A large number of liquid reactions are often used. Also, it can be used as a gas generator (4) conical bottles are often used for heating liquids; they can also be used for gas generators and bottle washing machines, and also for drip containers in titration. (5) evaporating dishes are usually used to concentrate or evaporate the solution. (6) the head dropper is used for removing and dropping a small amount of liquid. Note: when used in plastic head, orifice in (to prevent the liquid reagent into the glue head and the rubber head from corrosion or impurities into the solution of glue head dropper pipe can not extend into the infusion container (to prevent the dropper stained with other reagents) immediately after washing clean and inserted in a clean tube inside, without washing the dropper Dropper Bottles and other reagents is prohibited from the need for supporting the use of bottles (7) measuring instrument used for measuring a quantity of liquid volume. Not the solution or dilution in the cylinder, the cylinder must not be heated. Can the chemical reaction in the cylinder. Note: the amount of liquid, want to choose a proper size according to the amount of volume (otherwise it will cause large errors), reading should be a smooth vertical on the table, and make the lowest scale