Sci 401 General Chemistry Lab Safety Guide PDF

SCI 401 GENERAL CHEMISTRY ©2017 Batangas State University 1 Lec 1 Introduction, Lab Safety, and Waste Management 2 ©2017 Batangas State University  LABORATORY SAFETY 1. Dress appropriately ✔Wear a laboratory gown or coat to protect your clothing and...

SCI 401 GENERAL CHEMISTRY ©2017 Batangas State University 1 Lec 1 Introduction, Lab Safety, and Waste Management 2 ©2017 Batangas State University  LABORATORY SAFETY 1. Dress appropriately ✔Wear a laboratory gown or coat to protect your clothing and minimize skin exposure. ✔Shoes should completely cover the feet area. ✔Long hair should be tied back. ✔Wear protective goggles or glasses at all times in the Laboratory. 2. Keep your working area clean and organized. 3 ©2017 Batangas State University  LABORATORY SAFETY 3. For chemical reagents (solids and liquids): ⮚Keep them in the assigned dispensing area. Use laboratory instrument (test tube, beaker, etc.) when transferring reagents. ⮚Check the name on the reagent before using them. Label every instrument where chemicals are transferred. ⮚Avoid contaminating the reagents. ⮚Never return unused chemicals to the reagent bottles. 4 ©2017 Batangas State University  LABORATORY SAFETY 4. Keep the balance and weighing area clean. Use weighing papers for the solid reagents. Never weigh hot objects. 5 ©2017 Batangas State University  LABORATORY SAFETY 5. Dispose waste properly. THINK first before putting anything into the trash or sink. Always ASK if you are not sure how to properly dispose your waste. 6 ©2017 Batangas State University  LABORATORY SAFETY 5. Avoid direct contact with chemical ⮚ Wash your hands immediately anytime you get chemicals on them and after every laboratory activities. ⮚ Clean immediately all spillage before it dries up or goes into your skin and things. ⮚ Never use your mouth when using a pipet. ⮚ Never eat or drink in the laboratory. ⮚ Do not look directly into the open end of a test tube while a reaction is being conducted. 7 ©2017 Batangas State University  LABORATORY SAFETY 5. Avoid direct contact with chemical ⮚ To determine the odor of any chemicals, do not inhale the fumes directly. Waft vapors with your hand toward your nose. Use the fume hood for all irritating and toxic vapors. 8 ©2017 Batangas State University  LABORATORY SAFETY 6. Handle glassware with precaution. ⮚ When heating with Bunsen burner, use ONLY beakers, Erlenmeyer flask, or test tubes. ⮚ Do not hold a test tube in your hands during a chemical reaction. ⮚ Do not touch glass that has been near a flame. ⮚ Never use a thermometer as a stirrer. 9 ©2017 Batangas State University  LABORATORY SAFETY 7. Learn the location and proper use of safety equipment. 10 ©2017 Batangas State University  LABORATORY SAFETY 8. Be aware of the Material Science Data Sheet (MSDS). MSDS – is a document that provides workers with procedures for safely handling or working with a particular substance. It includes: technical information of the chemical, necessary protective equipment, how to handle spills, first aid suggestions, storage and disposal, and the general health effects. 11 ©2017 Batangas State University  LABORATORY SAFETY 9. Never work alone in the laboratory area. 10. Report all accidents to your instructor no matter how small it may seem. 11. DO NOT perform unauthorized experiments. 12. DO NOT enter the laboratory without supervision. 12 ©2017 Batangas State University  COMMON LABORATORY GLASSWARE Glassware used in all chemistry courses: 13 ©2017 Batangas State University  COMMON LABORATORY GLASSWARE Glassware used in all chemistry courses: Glassware Use Graduated Cylinder Measures the volume of liquid Wash bottle Rinses various pieces of laboratory glassware, such as test tubes and round bottom flasks Side arm flask or vacuum Filters solutions or removes solvent under reduced flask pressure Erlenmeyer flask (also Contain liquids and for mixing, heating, cooling, known as conical flask and incubation, filtration, storage, and other liquid-handling titration flask processes. 14 ©2017 Batangas State University  COMMON LABORATORY GLASSWARE Glassware used in all chemistry courses: 15 ©2017 Batangas State University  COMMON LABORATORY GLASSWARE Glassware used in all chemistry courses: Glassware Use Beaker Container to hold liquid or solid samples Funnel Guides liquid or powder into a small opening Test tube Used to handle chemical. Convenient container for heating small amounts of liquids or solids. Watch glass A surface to evaporate a liquid or heat solids Hold solids while being weighed Cover for a beaker 16 ©2017 Batangas State University  COMMON LABORATORY GLASSWARE Glassware used in all chemistry courses: Drying crystal solids using a watch glass and passing a stream of dry air from an inverted funnel 17 ©2017 Batangas State University  COMMON LABORATORY GLASSWARE Glassware used for conducting reactions and purifications: 18 ©2017 Batangas State University  COMMON LABORATORY GLASSWARE Glassware used for conducting reactions and purifications: Glassware Use Cork Ring Hold round bottom flasks, beakers and other glass containers snuggly to ensure against breakage. Fractionating column Essential item used in the distillation of liquid mixtures to separate the mixture into its component parts, or fractions, based on the differences in volatilities. West Condenser Cools vapors and condensing them back to liquid droplets that flow down the condenser into the receiver flask. 19 ©2017 Batangas State University  COMMON LABORATORY GLASSWARE Glassware used for conducting reactions and purifications: Glassware Use Separatory funnel Used in liquid-liquid extractions to separate the components of a mixture into two immiscible solvent phases of different densities Stopper Prevents the spillage of liquid in the separatory funnel when shaking. Round bottom flask Specifically shaped for uniform heat distribution, Used for distillation, chemical reactions, heating liquid sample, and storage demands. Three-way adapter Aids in distillation. 20 ©2017 Batangas State University  COMMON LABORATORY GLASSWARE Glassware used for conducting reactions and purifications: Glassware Use Claisen adapter Used in situations which require more than one outlet from a round-bottom flask. Vacuum adapter Connects to the lower end of the condenser and serves to direct the distilled liquid into the receiving flask. Thermometer adapter Maintains vacuum on the glassware system while monitoring the temperature Plastic clip (Keck clip) Prevents joints from separating. Rubber fitting for Allows thermometer to fit snuggly into the adapter to thermometer adapter maintain vacuum. 21 ©2017 Batangas State University  COMMON LABORATORY GLASSWARE Fun Fact: Female joint - designed to hold a thermometer adapter Side male joint - used to connect a distillation condenser Bottom male joint – used to connect a distillation flask(round bottom flask) 22 ©2017 Batangas State University  COMMON LABORATORY GLASSWARE Glassware used for conducting reactions and purifications: 23 ©2017 Batangas State University Check Experiment no. 1 uploaded on the google classroom. To be submitted on September 21, 2022 before 6:00 pm. Format upon submission: Section_Surname_LabReport1_Sci401 Watch the video on the Chemical Laboratory by Rebelen Cabello https://www.youtube.com/watch?v=9Ni5UOGp0hk &feature=youtu.be 24 ©2017 Batangas State University