SURVEY OF CHEMISTRY LABORATORY I CHEM 1151L SAFETY RULES

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

- Chemistry 1151L laboratory manual - Safety glasses - Scientific calculator - Laptop computer COURSE MATERIALS

- 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

- 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 - 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

- 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 completed reports to the instructor just to prove completion - Hard copies have to be submitted later - Changes cannot be made to the reports after ing or else the report will be considered late LABORATORY REPORTS

- Data sheets used for completing reports can be found at - 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

- 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

- 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

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

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

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

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

- 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

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

Safety ShowerSafety Shower & EyewashEyewash

- 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

- 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

- 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

- 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

- 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

Bunsen Burner Bunsen Burner connected to Gas Valve (Valve off) Gas Valve Bunsen Burner connected to Gas Valve (Valve on)

- 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

- 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

- 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

- 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