Many technical tasks involve materials that can be harmful if not handled correctly. These are called hazardous substances, and knowing how to manage them is vital for your health and safety.
▸ Hazardous Substance — Any substance that can cause harm to humans or the environment due to its chemical or physical properties, such as corrosives, flammables, or toxins.
Example: Cleaning chemicals, certain paints, or industrial solvents.
Always read product labels, use appropriate PPE like gloves and respirators, and work in well-ventilated areas when dealing with hazardous substances. Proper storage and disposal are also key.
★ Real-world:
In automotive repair shops, mechanics frequently handle oils, coolants, and battery acids. They must wear gloves and eye protection, and ensure these substances are stored in clearly labeled containers and disposed of according to environmental regulations.
✎ Activity: Research and list three common hazardous substances found in a typical workshop or home, and describe one safety precaution for each.
• Complete the activity described and discuss your answer with a partner or teacher.
Expected outcome: Learners can explain what they practised and connect it to the lesson objective.
Audio narration — reads aloud, works offline
In your own words, summarise the main idea of this lesson.