Question

15 why must accidents be reported immediately, even if no injury is visible?
conclusion
16 in 3 - 4 sentences, explain why following lab safety rules is essential for all students.

Explanation:

For question 9 (Why must accidents be reported immediately, even if no injury is visible?):

Accidents, even without visible injuries, may cause hidden harm (like chemical exposure effects or equipment damage). Reporting ensures timely assessment, prevents escalation (e.g., small spills becoming hazards), and maintains safety records for accountability and future prevention. It also helps identify risks in procedures or environments to improve lab safety.

Following lab safety rules protects students from physical (e.g., burns, cuts) and health (e.g., chemical exposure) hazards. It ensures accurate experiment results (by avoiding contamination or procedural errors) and fosters a responsible scientific mindset, preparing students for professional lab environments. Additionally, it safeguards others in the lab by minimizing risks of accidents that could harm peers or damage equipment.

Answer:

Accidents must be reported immediately (even without visible injury) because they may cause hidden harm (e.g., chemical exposure effects, equipment damage), allow timely risk assessment, prevent escalation (e.g., small spills becoming major hazards), and help improve safety protocols by identifying procedure/environment risks.

For question 10 (Explain why following lab safety rules is essential for all students in 3 - 4 sentences):