Final answer:
It is true that caution signs should be put up to alert others before cleaning spills. Safely handling the spill with appropriate protective gear is crucial, and consultation with a teacher is required for disposal and managing chemical spills or broken glass.
Step-by-step explanation:
The statement is true. When there is a spill, particularly in a laboratory or industrial setting, it is important to first put up a caution sign to warn others of the potential hazard. Then, the spill should be wiped up carefully following proper safety procedures. In a school lab setting, if the spill involves chemicals, the first step would be to inform the teacher before proceeding with cleaning. Safety protocols like using gloves, goggles, and safety aprons must be followed to protect oneself from any harmful substances. Moreover, special care must be taken with hazardous wastes and broken glass to avoid injuries and contamination; broken glass should not be touched with bare hands but cleaned up with a dustpan and broom.
Additionally, the procedure for disposing of any waste, especially chemicals, should always be verified with the teacher to ensure it is done correctly and safely, avoiding practices like pouring chemicals down the sink unless specifically directed to do so.