“Hazard Communication” for all existing chemicals that are currently sold. 3. What can make glassware unusable? Glassware is unusable in an experiment when it is chipped‚ broken‚ or cracked. 4. When should you wear goggles in the lab? You should wear safety goggles at all time. 5. How long should you wash your eyes if you get a chemical in them? If you have contact with chemicals in your eye‚ it should be rinsed for ten minutes. 6. What should you do if your clothing catches
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The specific heat capacity for water is 4.18 Joule/gram Kelvin degree Safety • Tie your hair back • Wear goggles • Don’t throw matches in the sink • Glassware can break when rapidly cooled or heated • Hot glassware can cause burns Materials • Apron • 250-mL Beaker • Bunsen Burner • Calorimeter • Goggles • Graduated cylinder • Matches • Metal • Ring stand • Ring • Water • Wire
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does affect evaporation will not be able to be measured in the short time available for each experiment Temperature * Bunsen Burner * Tripod * Heat Mat * Gauze * Beaker * Measuring Cylinder * Water * Thermometer * Safety Goggles * Gloves * Tongs * Scales Method Equipment - Control Variables * In this experiment the control variables are the volume of water we use for each beaker. If we change the volume of water for each beaker‚ the results we get will not
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Veins." National Heart Lung and Blood Institue 1 Feb. 2011: n. pag. goggle. Web. 20 May 2012. <http://www.nhlbi.nih.gov>. Staff‚ Mayo Clinic Train‚ Henry D‚ M.D. "Vein Center of Central Pennsylvainia." Paveins. Vein Center of Central Pennsylvania‚ 2008. Web. 20 May 2012. <http://paveins.com>. "Varicose Veins." Cardio Smart: n Weiss‚ Robert‚ M.D. "Varicose Veins and Spider Veins." Medscape (July 2010): n. pag. goggle. Web. 21 May 2012. <http://www.medicine.medscape.com>.
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the NaOH buret 10) Subtract the final volume of NaOH from the initial volume. 11) Repeat this process at least twice more. Materials: Buret (50mL) Graduated Cylinder (10mL) Beakers (250mL) Buret stand Erlenmeyer flask (125mL) Safety goggles Buret clamp 0.10M HCl (aq) (25.0mL) NaOH (aq) Vocab: Standard Solution: a solution containing a precisely known concentration Titration: a measured amount of a solution of unknown concentration is added to a known volume of a second solution
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Variables: Independent Variable: Ratio of reactants Dependent Variable: Temperature change Controlled Variable: Total number of moles of reactants Apparatus: Protective Goggles Thermometer Graduated Cylinder Sodium Hypochlorite (NaClO)‚ solution
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The Effect of Osmosis on The Mass of Eggs Victoria Vu Biology October 22‚ 2013 Introduction & Hypothesis The membrane of an egg is composed of keratin (a type of protein)‚ which is semipermeable. This means only certain materials will be allowed to enter and exit through the egg’s membrane. The purpose of this experiment is study the process in which water molecules pass the egg membrane‚ osmosis. This experiment also gives insight on how other ‘semipermeable membranes’ work‚ like a
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Nitromethane The chemical I did my research on is Nitromethane. In this paper I will talk about several of nitromethanes properties and what it is used for. I will talk about its use in industries. The physical properties‚ chemical properties‚ know toxic properties and the health effects. The testing methods and analytical methods‚ also if it was to spill. How to go about cleaning it up. Acceptable engineering controls and last but not least‚ personal protective equipment. Nitromethane is an
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If the shooter is more experienced in shooting‚ then the BBs would be more accurate and precise. Materials: KWC S&W 1911 45 caliber Airsoft gun Crosman Sticky Target Goggles BBs for gun Ruler Procedure: 1. Ask for 4 volunteers to do this experiment. 2. Load the Airsoft gun with BBs. 3. Ask volunteers to put on goggles in case of ricochet and show them how to pull back the barrel. 4. Tell them to shoot once‚ then wait till results are recorded‚ then shoot again. (Total shots: 5) 5. Tell
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light‚ this results in different shades of parts of the specimen. Apparatus: * Safety goggles * Lab coat * Light microscope * Lamp * Scalpel * Forceps * Slice of onion * Distilled water * Iodine * Watch glass * Glass slide (x2) * Mounted needle Health and safety: Wearing a lab coat protects individuals from iodine staining the clothes. Wearing safety goggles protects eyes from when using the scalpel to cut the onion. Be careful whilst moving around
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