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1.Why should you not use glassware that you know is not totally clean? Give examples.


2. What are 4 reasons long hair should be “UP”?

3. What are some do’s and don’ts about lab attire/clothing?

4. ________ True/False: Glasses count as eye protection.

5. Where is the eye wash station?

6. What should you do if your eyes feel funny?

7. What should you do if you think you have been exposed to a hazardous chemical?

8. ________ T/F: Eating and drinking in lab is a good idea.

1 answer

  1. Why should you not use glassware that you know is not totally clean? Give examples.
    Using glassware that is not clean can lead to contamination of your samples, which can adversely affect experimental results and lead to incorrect conclusions. For example, residual chemicals from a previous experiment could react with a new substance being tested, leading to unexpected reactions or toxic byproducts. Additionally, unclean glassware can harbor pathogens, which can be a risk in biological experiments.

  2. What are 4 reasons long hair should be "UP"?

    • Fire Hazard: Long hair can easily catch fire if there are any open flames present in the lab.
    • Safety from Equipment: Long hair can get caught in machinery or equipment, posing a risk of injury.
    • Preventing Contamination: Hair can introduce contaminants into experiments, especially in sterile environments.
    • Visibility: Keeping hair up ensures better visibility during experiments, reducing the risk of accidents.

  3. What are some do’s and don’ts about lab attire/clothing?

    • Do:
      • Wear closed-toed shoes to protect your feet.
      • Use lab coats or aprons to protect your skin and clothing from spills and splashes.
      • Wear safety goggles to protect your eyes from hazardous materials.
    • Don't:
      • Wear loose clothing or accessories that could get caught in equipment.
      • Wear open-toed shoes, sandals, or other inappropriate footwear.
      • Bring food or drinks into the lab, where they could be contaminated.

  4. ________ True/False: Glasses count as eye protection.
    False. Regular glasses do not provide adequate protection and may not meet safety standards for eye protection in a lab setting. Safety goggles or face shields are required for proper eye protection.

  5. Where is the eye wash station?
    The eye wash station is usually located near the exits or in designated safety areas of the laboratory. It should be clearly marked with signage, and everyone should know its location before starting work in the lab.

  6. What should you do if your eyes feel funny?
    If your eyes feel funny (e.g., itchy, burning, or if you've been exposed to chemicals), immediately flush them with water at the eye wash station for at least 15 minutes. Seek medical attention if discomfort persists or if you suspect a chemical exposure.

  7. What should you do if you think you have been exposed to a hazardous chemical?
    If you think you have been exposed to a hazardous chemical, move to a safe area away from the source of exposure. Follow the lab's emergency protocols, which may include rinsing the affected area (skin or eyes) with water, informing your instructor or supervisor, and seeking medical attention as necessary.

  8. ________ T/F: Eating and drinking in lab is a good idea.
    False. Eating and drinking in the lab is not a good idea as it can lead to contamination, accidents, and exposure to hazardous materials. It is important to keep food and drink out of laboratory environments.