SAFETY IN THE LABORATORY Laboratory Breakdown 25 overall

SAFETY IN THE LABORATORY

Laboratory Breakdown 25% overall Your Grade will include � Pre-lab: Due 5 points by the beginning of lab! � Laboratory: Due 20 points by end of the lab unless told otherwise � Quizzes/Exams 2 safety quizzes, mid-term and final laboratory exams For Mid-term and Final, you may use your notebook! Points will be taken off pre-lab if turned in late!

General Rules Eye protection must be worn by ALL students when working in the lab No food or drink in the lab Do not taste any chemicals Put all personal belongings under the benches Shoes must be worn at all times! Long Hair Should be tied back or pinned up Do not work in the lab alone!

General Rules Cont. Take care of your mess!! � Make sure your area is cleaned up, and lab drawer is put away properly If a common area is messy, clean it up!!! � Especially the balance area Dispose of waste properly � Waste beakers will be labeled, if you don’t know, ask! If any glassware breaks, dispose of in the glass waste.

Proper Attire Closed toed shoes Long pants No spaghetti straps Goggles must be worn if chemicals are out!!! Lab aprons are available Long hair should be tied back

MSDS Material Safety Data Sheet � Description and reactivity information of substances � Includes information such as: � Melting Point Boiling Point Toxicity Effects Reactivity Storage Disposal Health

Laboratory Notebook Pre-Lab includes � 1 page pre-lab with questions you must answer � Completion of Title, Intro, Purpose, and Procedures in laboratory notebook Write in ink ONLY! If you make a mistake, cross it out and rewrite. This is a legal document! Use passive voice in past tense. � “ 25 m. L of ethanol was added to the reaction mixture” instead of “I added 25 m. L of ethanol to the mixture”. Label all data with correct units!

Laboratory Notebook To keep yourself organized, put data into tables. If your data includes an excel graph, staple it into your laboratory notebook, and attach a second copy to hand into your instructor. Notebook should be used for this lab ONLY! All pages should be numbered sequentially Answer all questions posed in the manual in the conclusions, and ALWAYS explain possible sources of error (Human error is not an acceptable answer).

Laboratory Notebook Laboratories will usually be due the Monday after class, unless otherwise specified Hand in the yellow copies to your instructor along with any graphs attached to the back. Practice PATIENCE! Show all calculations in notebook. If several iterations of the same calculation occur, then you only need to provide one example.

Notebook Organization Title: What you are trying to accomplish, e. g, to determine the density of a compound, etc. Purpose: Expand upon what the purpose of the laboratory is. Think about the information that you will obtain at the end of the experiment. Procedure and Materials: Should include sufficient information to allow the experiments to be repeated. Usually organized by bullets or numbers. Complete sentences are not necessary.

Notebook Organization Data and Calculations: Clear tables and explanations of calculations for all analysis of primary data. I must be able to see how you came to your answers! Results, Discussion, and Conclusions: Summarize findings, discuss accuracy and precision. Answer all questions found in the manual, and discuss sources of error. Did you accomplish what you set out to do?

Laboratory Equipment