Final answer:
In case a graduated cylinder is broken and water is spilled, ensure safety first, report the incident, clean up carefully while wearing gloves, dispose of glass safely, and dry the area.
Step-by-step explanation:
If a graduated cylinder was knocked to the floor and broken, and the water spilled, the first action you should take is to ensure the safety of everyone present. Clear the area to prevent injuries from glass shards and make sure the spill doesn’t cause anyone to slip.
Next, report the accident to the appropriate authority such as a teacher or laboratory supervisor. They will provide instructions or assistance in cleaning up the broken glass and spilled water safely, often with the help of a spill kit if available. If no authority is present, use a broom and dustpan to sweep up the glass carefully, making sure to protect your hands with appropriate gloves.
Lastly, dispose of the broken glass in a container designated for sharp items to avoid harm to anyone who handles the waste. Absorbent materials should be used for absorbing the water before mopping the area clean. Once everything is secure and clean, then the spill can be reported if it hasn't been done already, and you may return to your task of measuring liquid volumes, ensuring to mentally subdivide the meniscus for accurate readings, as instructed during lab procedures.