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 allowedAll 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 athttp://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

- 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

- Data sheets used for completing reports can be found athttp://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

- 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 SHOWER AND EYEWASH

Safety Shower Safety Shower & Eyewash Eyewash

- 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 bottlesFor 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

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 toGas Valve (Valve off)

Gas Valve

Bunsen Burner connected toGas 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

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

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

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 importantWash your hands with soap before leaving the lab

BEFORE LEAVING THE LAB