survey of chemistry laboratory i chem 1151l safety rules

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  • Slide 1
  • SURVEY OF CHEMISTRY LABORATORY I CHEM 1151L SAFETY RULES
  • Slide 2
  • After completing the course, student will - execute the procedure of a textbook laboratory experiment with attention to accuracy, proper procedure and health & safety - be able to collect relevant data and make careful, appropriate observations during the execution of the experiment - be able to interpret the data for the purpose of completing calculations and answering questions on the laboratory report sheet COURSE OBJECTIVES
  • Slide 3
  • - Chemistry 1151L laboratory manual - Safety glasses - Scientific calculator - Laptop computer COURSE MATERIALS
  • Slide 4
  • - Attendance is mandatory - There are no provisions for make-up labs - Missing classes for more than three times is an automatic failure - Absenting oneself and copying data from a lab partner is NOT allowed All parties involved in such acts will be penalized ATTENDANCE POLICY
  • Slide 5
  • - Carefully read through the course syllabus and safety rules before labs begin - Every student must print and sign the lab safety and lab waiver forms before labs begin - Forms and more information can be found at http://a-s.clayton.edu/Chemistry/CHEM1151L/chem1151Lhome.htm - Before coming to each class, carefully read objectives and procedure of the experiment to be conducted - Record all data and observations during experiment and use that to complete laboratory reports GENERAL RESPONSIBILITIES
  • Slide 6
  • - All laboratory reports should be typed using Word and printed - All graphs should be plotted using Excel and printed - Only hard copies are accepted - Hand written reports will not be accepted In case of a printing problem - Students may email completed reports to the instructor just to prove completion - Hard copies have to be submitted later - Changes cannot be made to the reports after emailing or else the report will be considered late LABORATORY REPORTS
  • Slide 7
  • - Data sheets used for completing reports can be found at http://a-s.clayton.edu/Chemistry/CHEM1151L/chem1151Lhome.htm - These data sheets are also included in the laboratory manual - Students are required to complete all tables of data, observations, calculations, and all the questions that follow - Laboratory reports are due in one week (just before the next class begins) - Reports submitted during or after the class are considered late - Late reports incur a penalty of 10% per day - No reports are accepted after the last day of classes LABORATORY REPORTS
  • Slide 8
  • - Carefully observe all safety rules since it is a major concern at all times - Materials Safety Data Sheets (MSDS) are available in the labs and give important information on the properties of chemicals - All containers are labeled with the National Fire Protection Association (NFPA) safety diamonds that show the type and degree of a chemical hazard - The safety diamond is color coded as shown on the next slide GENERAL LAB SAFETY
  • Slide 9
  • - The white gives special information such as water or oxidizer incompatibility - The degree of hazard is rated from 0 to 4 0 indicates no significant hazard and 4 is the greatest hazard GENERAL LAB SAFETY
  • Slide 10
  • Students may lose points if the following safety rules are not observed - Always come to the lab early (about 5 minutes to time) and prepared - Students must be present during the pre-lab lecture which is given at the beginning of each class - Students who miss pre-lab lecture may not be allowed to do the experiment and will obtain a zero for that lab report - Goggles must be worn at all times - Dress, skirts, or shorts above the knee are NOT allowed. However, students may cover these with a suitable lab coat or apron GENERAL SAFETY RULES
  • Slide 11
  • Students may lose points if the following safety rules are not observed - Closed-toed shoes must be worn at all times (No open-toed shoes, sandals, slippers, high-heeled or woven shoes) - Loose sleeves must be folded to prevent dipping in chemicals - Long hair must be tied back and out of the way - No eating, drinking or smoking in the lab - No chewing of gum in the lab - Do not wear eye contacts to the lab GENERAL SAFETY RULES
  • Slide 12
  • Students may lose points if the following safety rules are not observed - Do not sit on lab benches - Put all broken or chipped glass in the broken glass container (not trash can) - Do not pick up broken pieces with bare hands (use broom or hard gloves) - No horse play is tolerated in the lab - No unauthorized experiments are allowed (ask instructor for any clarifications) GENERAL SAFETY RULES
  • Slide 13
  • Students may lose points if the following safety rules are not observed - All book bags should be placed or hanged in one corner of the lab - Book bags may also be put in cabinets - Lab floor (aisles) must be free of bags - Only notebooks, pens/pencils, calculators, and laptops are allowed to be placed on lab benches REPORT ALL ACCIDENTS, HOWEVER MINOR, TO THE INSTRUCTOR GENERAL SAFETY RULES
  • Slide 14
  • - Avoid direct contact with chemicals - Avoid touching your face with your hands while in the lab - In case of skin exposure to chemicals wash off immediately with lots of water - Always wash your hands very well with soap before leaving the lab EXPOSURE TO CHEMICALS
  • Slide 15
  • Body Contact with Chemicals - Safety showers (located at the corners of the labs) may be used - Remove clothing if appropriate Face Contact with Chemicals - Wash face using eyewash fountain for about 15 minutes - Do not take off goggles Eye Contact with Chemicals - Remove goggles - Use fingers to prop eyelids open - Rinse with eyewash fountain for about 15 minutes - If only one eye is affected, do not rinse both SAFETY SHOWER AND EYEWASH
  • Slide 16
  • Safety ShowerSafety Shower & EyewashEyewash
  • Slide 17
  • - Do not smell chemicals unless instructed to do so - Never taste chemicals - Do not pipette chemicals by mouth - Never remove chemicals from the lab - Use fume hoods when directed to do so - Always place chemicals and equipment as far back as possible HANDLING CHEMICALS
  • Slide 18
  • - Carefully read labels on all bottles For example: do not mistaken 0.1 M HCl for 1.0 M HCl - Label all reagents stored in beakers, bottles, or test-tubes - Never return unused chemicals to the original container - When diluting solutions add acid/base to water but not water to acid/base HANDLING CHEMICALS
  • Slide 19
  • - Heating may be done with hotplates or Bunsen burners - Do not heat or cool a closed container - Point opening of test-tube or flask away from yourself and others while heating - Do not heat or cool volumetric glassware - Do not pick up hot objects with bare hands (use tongs) - Do not hand hot objects to the instructor - Do not use thermometers as stirring rods HEATING OR COOLING
  • Slide 20
  • - Turn on a bit earlier than when needed to save time - Do not touch with bare hands - Turn off immediately after using - Allow to cool before returning to the shelves HOTPLATE
  • Slide 21
  • Slide 22
  • - Make sure there are no flammable substances present - Be cautious of long hair and loose clothing - Never leave burner on unattended - Turn on when needed and turn off immediately when finished - Make sure gas valve is tightly closed BUNSEN BURNER
  • Slide 23
  • Bunsen Burner Bunsen Burner connected to Gas Valve (Valve off) Gas Valve Bunsen Burner connected to Gas Valve (Valve on)
  • Slide 24
  • - Use fume hoods whenever directed to do so - Place chemicals and equipment as far back as possible (At least 4 inches away from the front) - Slide hood door as far down as possible - Make sure hood is turned on FUME HOODS
  • Slide 25
  • Slide 26
  • - Keep the mass balance and the area clean at all times - Use the brushes available to clean up after use - Put all used weighing papers/boats in the trash can - When massing, record all digits and never round off MASS BALANCE
  • Slide 27
  • Slide 28
  • - Know locations of all exits (center windows of C48 and C54 are emergency exits) - Know locations and use of safety equipment (fire extinguisher, showers, eyewash fountains, fire alarm, first aid kit) - In the event of fire, turn off equipment & gas line and then exit If your clothing catches fire - Use safety showers - Roll on the floor if shower is not close by - Shout to get attention of others REMEMBER REPORT ALL ACCIDENTS, HOWEVER MINOR, TO THE INSTRUCTOR IN CASE OF EMERGENCY
  • Slide 29
  • Slide 30
  • - Turn off all equipment (including water taps, gas line, vacuum line) - Return all equipment and items to their respective shelves - Wash all used glassware with soap, rinse with water, and return to storage shelves or drawers - Clean the lab bench and the hood where you worked - Do not leave glassware, chemicals or bottles on your bench or by the sink - Last but very important Wash your hands with soap before leaving the lab BEFORE LEAVING THE LAB

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