Chemical Hazard Symbols

Try these questions

5 questions from this lesson’s quiz. Start the lesson to answer them and see the right answers.

1. 1. A bottle of concentrated pesticide in a Kenyan farm store carries a skull and crossbones symbol. What does this symbol warn about?

   • A. The substance catches fire easily
   • B. The substance is acutely toxic and can cause serious harm or death in small amounts
   • C. The substance gives off ionising radiation
   • D. The substance only harms plants and fish

2. 2. A learner touches a toxic powder, then eats a snack without washing their hands. Through which route does the poison enter the body?

   • A. Inhalation
   • B. Dermal absorption
   • C. Ingestion
   • D. Radiation

3. 3. Which statement correctly compares toxic and carcinogenic substances?

   • A. Both always cause harm within minutes
   • B. Toxic substances act rapidly, while carcinogens may cause cancer years after exposure
   • C. Carcinogens cause instant burns, while toxic substances only act after decades
   • D. Neither can harm a person if they feel fine after exposure

4. 4. Why is the radiation trefoil symbol on a hospital X-ray room door so important?

   • A. Radiation can be smelled, so the door must be kept shut
   • B. Radiation is invisible and cannot be smelled, tasted or felt, so the symbol is the main warning
   • C. Radiation only affects metal objects
   • D. Radiation is harmless if the room is cold

5. 5. What one-word term describes the deliberate separation of incompatible chemical containers to prevent dangerous reactions?

   Type your answer in the lesson.

More in Laboratory Safety

• ▸Acids, Bases and the pH Scale
• ▸Introduction to Laboratory Safety and Rules
• ▸Laboratory Design, Layout, and Safety Installations
• ▸Chemical Hazard Symbols
• ▸Causes of Common Laboratory Accidents
• ▸First Aid Measures Laboratory Burns and Scalds
• ▸First Aid Measures Cuts and Glassware Injuries
• ▸First Aid Ingestion and Inhalation

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