Students practice identifying dangerous chemicals by matching standard hazard symbols to their meanings in this introductory science activity.

Let's solve Activity 1.1: Laboratory Safety from the worksheet step by step.

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🔍 Task Overview

You are asked to match each hazard symbol on the left with its correct hazard description on the right.

There are 7 symbols and 7 hazard descriptions. You need to draw lines connecting each symbol to the correct hazard.

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✔ Step-by-Step Matching

Let’s go through each symbol and identify which hazard it represents:

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#### 1. Symbol: Explosion (bursting bomb)
- 🧨 This symbol shows an explosion.
- It means the substance can explode when heated or struck.
- ➡️ Matches with: Explosive
> *"The substance reacts violently when heated or struck."*

✔ Match: Explosion → Explosive

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#### 2. Symbol: Flame
- 🔥 A flame icon indicates that the substance can catch fire easily.
- ➡️ Matches with: Flammable
> *"The substance catches fire easily."*

✔ Match: Flame → Flammable

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#### 3. Symbol: Large "X" (cross)
- ✘ This is a corrosive symbol, often used for substances that can eat away materials like skin or metal.
- ➡️ Matches with: Corrosive
> *"The substance corrodes (eats away) other substances."*

✔ Match: X → Corrosive

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#### 4. Symbol: Three-bladed fan (radiation symbol)
- ⚛️ This is the radioactive symbol — three curved blades around a center.
- ➡️ Matches with: Radioactive
> *"The substance emits harmful radiation."*

✔ Match: Radiation symbol → Radioactive

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#### 5. Symbol: Skull and crossbones
- ☠️ This is the classic toxic symbol — indicates something deadly even in small amounts.
- ➡️ Matches with: Toxic
> *"The substance is harmful in small doses."*

✔ Match: Skull & Crossbones → Toxic

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#### 6. Symbol: Liquid dropping onto hand and surface, causing damage
- 💧 This shows irritation — fumes or vapours that affect eyes, nose, throat.
- ➡️ Matches with: Irritant
> *"The substance produces vapours or fumes that irritate the eyes, nose and throat."*

✔ Match: Dropping liquid → Irritant

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#### 7. Symbol: Biohazard (three interlocking circles)
- 🦠 This is the biohazard symbol — used for biological threats like viruses, bacteria.
- ➡️ Matches with: Biohazardous
> *"A poisonous substance of biological nature."*

✔ Match: Biohazard symbol → Biohazardous

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✔ Final Answer: Matched Pairs

| Symbol | Matches With |
|-------|--------------|
| Explosion (bursting bomb) | Explosive |
| Flame | Flammable |
| Large "X" | Corrosive |
| Radiation (three blades) | Radioactive |
| Skull and crossbones | Toxic |
| Liquid on hand/surface | Irritant |
| Biohazard (three circles) | Biohazardous |

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📝 Summary

This activity helps students learn how to recognize common laboratory hazard symbols, which is essential for safety when handling chemicals and materials in science labs.

Always remember:
> Know the symbols → Know the risks → Stay safe!

Let me know if you'd like a printable version or diagram of these matches!