our chemical laboratory. taqdimot 13 bet.

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презентация powerpoint tashkent pharmaceutical institute the department of foreign languages theme: our chemical laboratory write: _____________________ check: _____________________ our chemical laboratory. plan 1. the chemical laboratory. 2. our chemical laboratory. 3. use of the bunsen burner. 1. the chemical laboratory. a laboratory is a building or a room used for scientific experiments, research, testing and the preparation, on a small scale, of drugs, chemicals or other products or substances. the chemical laboratory may be used for teaching purposes, for routine analysis, testing and control, for fundamental (pure) research or applied research, or as an adjunct to development or production for industry. there are also specialist types of laboratories, for example those for nuclear research. the typical chemical laboratory usually consists of a large room with a weighing (balance) room, a reagent room and sometimes a darkroom. this is our chemical laboratory (lab). we have our practical classes on chemistry in …

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ry week the students attend lectures and have their practical classes on chemistry. during practical classes, the students make many interesting experiments. they obtain pure oxygen, hydrogen and other elements and study their properties. they often dissolve and mix substances and obtain solutions and mixtures. before a reaction, they weigh substances, as they have to know the exact amount of substances, which they use in a reaction. during the reaction they observe it and at the end of a reaction they record the yield. 3. use of the bunsen burner. turn on the gas and, after a few seconds, light the burner by bringing a lighted match from the side to the top of the burner. do not hold a lighted match over the burner when turning on the gas. adjust the gas valve and rotate the collar over the air vents until the flame has an inner blue cone …

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презентация powerpoint tashkent pharmaceutical institute the department of foreign languages theme: our chemical laboratory write: _____________________ check: _____________________ our chemical laboratory. plan 1. the chemical laboratory. 2. our chemical laboratory. 3. use of the bunsen burner. 1. the chemical laboratory. a laboratory is a building or a room used for scientific experiments, research, testing and the preparation, on a small scale, of drugs, chemicals or other products or substances. the chemical laboratory may be used for teaching purposes, for routine analysis, testing and control, for fundamental (pure) research or applied research, or as an adjunct to development or production for industry. there are also specialist types of laboratories, for example those for nuclear r...

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