Lab Safety and Lab Report Guidelines Lab Safety

Lab Safety and Lab Report Guidelines

Lab Safety Contract Every student MUST have a signed lab safety contract on file in order to participate in lab. If a student does not have on file- they must complete an alternative assignment decided on by the teacher. You must provide contact information on the lab safety contract. In case of an accident your parents/guardians must be notified.

Lab Safety Rules Laboratory Safety Rules Goggles & apron are required whenever anybody is working with heat, chemicals and/or glassware. Long hair must be tied back. Bulky clothing not recommended. Only closed-toe shoes may be worn on lab days (no flip flops, sandals, or ballet flats). Chemicals must never be removed from the lab. Do not pour chemicals back into the chemical container. Only dispose of leftover or used chemicals as instructed for each lab. Read ALL lab procedures before beginning. This allows you to structure your time and safely carry out all procedures in an unhurried fashion. NEVER point the mouth of a heating test tube toward anybody. NEVER eat or drink anything in lab, and keep your hands away from your face.

Lab Safety Rules Continued Always follow instructions and never improvise without approval of the teacher. Know the location of the eyewash, fire blanket and shower. Never leave an experiment unattended. Report all accidents or spills immediately. Leave your lab station dry and tidy. Always wash hands with soap and hot water right before you leave the lab. Absolutely no horseplay will ever be tolerated in the lab. No makeup should be applied during lab (e. g. lip gloss, face powder, mascara, etc. ) Pants, shorts, skirts, or dresses should be knee-length when performing labs. Wearing jewelry during lab is not advised. DO NOT smell chemicals without instruction from the teacher.

Lab Safety Discipline Failure to comply with lab safety procedures will result in points deducted from the lab or loss of lab privileges. These rules are in place for safety reasons. A student will be given ONE warning before points are deducted from the lab assignment.

Lab Report Rubric Title- At the top of the lab report Introduction- background information about the experiment (1/2 page minimum on college ruled notebook paper) Include definitions, formulas, and concepts related to the experiment Hypothesis/Purpose- this is 1 -3 sentences explaining either the purpose of the experiment or the hypothesis (predicted outcome) for the experiment Materials and Methods- List materials using bullets then use numbers to list out the steps of the experiment. This part needs to be detailed (anyone should be able to do the experiment by looking at the procedure). The title, introduction, purpose, materials, and methods combined are worth 30 points. All 4 components must be completed BEFORE the start of lab. Failure to complete these before lab will results in point deductions (-20 points for failure to check in). Data/Results- any charts, tables, graphs, or other data collected during your experiment plus any calculations that were done (40 points) Discussion- this last part of the lab report discusses the results of the lab and whether or not the hypothesis was supported or the purpose was achieved. This is NOT a summary of the experiment. Make a claim about the data, refer to specific trials as evidence, and add logic and reasoning to explain why these results make scientific sense. Compare data between lab groups if needed. (1/2 page) *Hint: Use CER (claim, evidence, and reasoning) to guide the writing of the discussion. (30 points)

Lab Report Rules 1. All lab reports must be written in pen (blue or black ink only). A penalty of 20 points will result if the lab is not in blue or black ink. Lab reports will be written the day before the lab during class. 2. The student must check in with the teacher before beginning lab and receive a check mark- the teacher must see the introduction, purpose, materials, and methods- failure to check in will result in an automatic 20 point penalty on the lab report. Reminder: The checkmark is NOT a grade! The complete lab report from title to discussion must be turned in order to receive a grade. 3. No pronouns (I, we, us, you, etc. ) are to be used when writing a lab report. Scientific writing is done using passive voice, not active voice. Example: I threw the ball. (Active voice) vs. The ball was thrown. (Passive voice) For each pronoun used it is minus 1 point. 4. You must have a signed lab safety contract on file to participate in lab. If there is not one on file, the student will receive an alternative assignment and be sent out of the classroom to complete it. This will happen each lab until a signed lab safety contract is brought back. 5. Formal lab reports will be written once per week from August through April. Lab reports will always be due the Monday after the lab unless otherwise scheduled. For each day it is late, 10 points will be deducted until it is a 50. At that point, 50 is the MAXIMUM grade allowed for that lab.