Final answer:
In the science lab, never touch parts of a dish that a guest might touch to prevent contamination. Equipment must be thoroughly cleaned, and safety around heat sources is crucial. Report accidents and equipment issues to the teacher promptly.
Step-by-step explanation:
When it comes to safety in the science lab, it's important to exercise caution in every action. Lab protocols dictate that you should never touch a part of a dish that a guest's mouth might touch for hygiene and safety reasons. This practice prevents the potential spread of contamination and the inadvertent tasting of any harmful substances that may be present from previous experiments or lab activities.
Cleaning equipment like test tubes and beakers is imperative to avoid unwanted chemical reactions during future experiments. Also, particular care should be taken when using flames or heat sources, ensuring that items like hair and clothing are kept safely away. Immediate reporting to the teacher is crucial if something unexpected occurs or if someone is injured, as an accident report may be necessary, and they need to know about any damage or loss of materials.