TY - Chemistry C Lab Safety, Equipment, & Techniques

Ace your chemistry lab with essential safety rules, equipment, and techniques!

Lab Safety Rules Click on the information about a lab situation and decide if it is describing correct lab safety or violating lab safety rules. Violating Lab Safety After completing an experiment, all chemical wastes should be thrown in the trash. If a lab fire erupts, hang around, scream, and try to put it out. If an experiment is going to create a volatile or poisionous gas, you perform the experiment on the lab table. When heating a test tube, always point the open end at your partner or put a stopper in the end. When you smell a chemical you take a big wiff of it. It is okay to wear whatever shoes are appropriate for the weather in the lab. If an acid or base is splashed on the lab table you need to put water on it. Correct Lab Safety If you do not understand a direction or part of a lab procedure, you should ask the teacher. Flammable materials, like alcohol, should never be dispensed or used near a flame. Goggles, apron and gloves are worn in the lab at all times. If you are injured during lab tell the teacher immediatly. Always make sure glassware is not chipped or broken and that it is clean. If you have long hair, loose clothing or jewerly you need to have it pulled back or put away. Lab is to be taken seriously, therefore no horseplay or practical jokes. If an acid or base is splashed on your skin you need to wash it with copious amounts of water. Before leaving the lab you need to clean up your station and wash your hands. True or False Click on the statement and determine if it is true or false. False Return all unused chemicals to their original containers. Chipped and cracked glassware is okay to use. Pipets are used to measure and dispense small amounts of liquids using your mouth. Laboratory work can be started immediately upon entering the laboratory, even if the instructor is not present. A zero in one of the hazard diamonds indicates it is a serious hazard. You are allowed to enter the chemical preparation area any time you need to get an item. It is okay to up broken glass with your bare hands, as long as the glass is placed in the trash. True A 3 or 4 in one of the hazard diamonds indicates it is a serious hazard. Hot glass looks like cold glass. All chemicals in the lab are to be considered dangerous. Work areas should be kept clean and tidy. Never remove chemical or other equipment from the laboratory. Read all procedures thoroughly before entering the laboratory. All unauthorized experiments are prohibited. Lab aprons should be worn during all lab activities that involve chemicals. Never leave a lit burner unattended. Always pour acid into water when diluting a solution. Lab Equipment Name the following lab equipment by clicking on the blue dot and filling the the correct name exactly as they are in the word bank.Word Bank: Test Tube Rack, Beaker, Scoopula, Crucible Tongs, Bunsen Burner, Crucible, Ring Clamp, Balance, Goggles, Test Tube Holder, Morter and Pestle, Wire Gauze, Ring Stand, Test Tubes, Graduated Cylinder, Clay Triangle Beaker Morter and Pestle Crucible Goggles Wire Gauze Ring Stand Ring Clamp Crucible Tongs Clay Triangle Test Tubes Bunsen Burner Test Tube Holder Scoopula Balance Test Tube Rack Graduated Cylinder Lab TechniquesFill in the correct word(s) exactly as they appear in the word bank.Word Bank: decant, pipette, beaker, Chromatography, scoopula, clay triangle, Filtering, distillation, graduated cylinder, burette, wire gauze 1. A beaker would not be used when measuring liquids for accuracy. Instead, a graduated cylinderwould be used.2. To heat a crucible you would need a ring stand, ring clamp, Bunsen Burner, and a clay triangle3. To heat a beaker you would need a ring stand, ring clamp, Bunsen Burner, and wire gauze4. A scoopulawould be used to obtain a large amount of solid chemicals out of the reagent bottle.5. A pipette would be used to dispense liquid chemicals drop by drop.6. Filtering would be used to separate chemicals based on particle size.7. If you needed to just pour a liquid off of a precipitate you could decant8. Chromatography is used to separate out small particles such as the particles in ink.9. A distillation would be used to separate two liquids based on boiling point.10. To determine the pH of an acid, you would dispense a base drop by drop with a burette Lighting a Bunsen Burner Put the following statements about lighting a Bunsen Burner in order by matching them to the correct number. Clear off the lab bench. Remove all flammable and combustible materials from the work area. 1 Connect the rubber tubing to the lab burner gas inlet and gas valve. Check for holes or cracks in the tubing. 2 Close both air and gas vents, then open both two turns. 3 Turn on the gas. 4 Hold striker off center and a few inches over the top of the barrel and create a spark over the gas coming out of the burner. 5 Adjust the gas a air supply to get a 3-4 inch high blue flame. The flame should have a light blue cone in the middle. 6 Turn off the gas at the gas source when finished. 7