University of KwaZulu-Natal Westville Campus Chemistry 220 Organic Chemistry 2012 LABORATORY MANUAL It is a legal requirement that are worn in this room at all times. Sunglasses (normal or prescription) are NOT to be worn as a substitute for safety glasses. Prescription glasses (except sunglasses) are acceptable PROVIDED THEY COVER THE EYES COMPLETELY. Some types of contact lens should not be worn in the laboratory. Check with your lens supplier. All shoes MUST be closed. No high heels are allowed
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average‚ and uncertainties being 50.0001 +/- 0.22mL. The third peace of glassware coming in as the least accurate would be the 100 mL beaker with a true volume of water(calculated)‚ class average‚ and uncertainties being 59.9999 +/- 0.82mL.
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to study the relationship of several types of volumetric glassware and the accuracy of measuring the volumes of liquids very precisely in quantitative laboratory work. The accuracy of the measurement the volumes is the degree of closeness of measurements of a quantity’s actual volumes while the precision of the volumes is the degree to which repeated measurements under unchanged conditions show the same results. Each of volumetric glassware is marked with its total volume‚ the notation of TD for
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animal behavior Bunsen Burner Bunsen burner‚ is a common piece of laboratory equipment that produces a single open gas flame‚ which is used for heating‚ sterilization‚ and combustion. It is used for heating‚ sterilization‚ and combustion. Condenser A condenser usually consists of a large glass tube containing a smaller glass tube running its entire length. A condenser is a piece of laboratory glassware used to cool hot vapors or liquids Test Tube A small cylindrical glass
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Windy T. Padilla BIO 008 OP 1-1 Dr. Elmo Ado Laboratory Instruments: Test Tube -A test tube‚ also known as a culture tube or sample tube‚ is a common piece of laboratory glassware consisting of a finger-like length of glass or clear plastic tubing‚ open at the top‚ usually with a rounded U-shaped bottom. Test Tube Rack - A test tube rack is a gadget used in the laboratory for holding test tubes. It is made of a base that has a platform which is mounted
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a stumble‚ fall‚ and breaking of skin from scissors and their razor sharp arms. Similar warnings should exist for sparkling green glassware. We should be telling people‚ “Don’t run with sparkling green glassware‚ you’ll trip‚ fall‚ cut your body open on shards and bleed. Look‚ now you’ve hurt yourself.” Because there are no such warning for sparkling green glassware I fell victim to this lapse in judgement; and‚ in a painfully slow moment my mind entered a trance caused by this fleeting sun set
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The experiment is trying to determine how much of a solution containing vitamin C is required to be added to 1 cm3 of blue chemical to change its colour from blue to clear. The experiment users an new and old lemon‚ orange and blackcurrant juice‚ each with varying amounts of vitamin C content. Each experiment has independent and dependent variables. The solutions of soft drinks contain different levels of vitamin C (with old and new varieties) will be the independent variables in the experiment
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standard solutions includes; a volumetric flask‚ a glass beaker‚ two plastic weighing boats‚ scales‚ a spatula‚ and the sodium hydroxide. When using glassware in experiments‚ it must be flushed out to make sure that cross contamination does not happen and that the only thing that would then be coating the beaker is the distilled water. When all of the glassware has been cleaned‚ some sodium hydroxide should be placed in a plastic weighing boat next to the scales and place the second weighing boat on the
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Table of Contents Laboratory Safety and Laboratory Guidelines Common and Special Laboratory Equipment Materials and Other Requirements Common Laboratory Operations and Techniques Experiment 1 …………………………………………………………………………..10 Properties of Matter Experiment 2 …………………………………………………………………………. 12 Chemical Changes Experiment 3 …………………………………………………………………………. 15 Classification of Matter Experiment 4 …………………………………………………………………………
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tip. 3 TLC chambers were prepared using 7mL of each different mobile phase (9:1‚ 8:2 and 7:3 pet ether: acetone solution). The TLC’s were performed and Rf values were measured. All materials were disposed of properly and all glassware was cleaned following correct laboratory
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