Lab Safety

9SCIE - Introduction to Pūtaiao

Finn Le Sueur

2024

Matapaki / Discussion

  1. Turn to your partner and come up with four different rules that should exist in the lab to keep you safe!
  2. Come write them on the board!

Matapaki / Discussion

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Tikanga Haumaru / Safety Rules

  • Always wear safety glasses
  • Loose clothing should be done up or taken off
  • Long hair should be tied back
  • Do not eat or drink in the lab
  • Always wash your hands thoroughly after experiments
  • Follow instructions - dont’t play mad scientist!
  • Know what to do in case of an accident!

Mahi Ngātahi / Group Activity

  1. Work in pairs (takirua)
  2. Collect an A4 page from the front
  3. Create a poster that can educate others about the most important safety rules (tikanga haumaru) for the lab!
  4. Make it pretty and neat!
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Whakamātau: Hydrogen Balloons

  1. Safety Considerations?
    • Safety glasses
    • If you break a flask, let Mr Le Sueur know
    • Don’t put your hands on your face until you wash them at the end of the period!
  2. Collect a connical flask and a sheet of aluminium foil
  3. Roughly tear up the foil into 2cm by 2cm squares
  4. Place all the foil in the connical flask
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Step 2: Collecting Hydrogen Gas

  1. Safety Considerations?
    • Be careful with the sodium hydroxide
    • If you get some on you, let Mr Le Sueur know and run the skin under cold water for 5 minutes.
    • Don’t breathe in or taste the chemicals
  2. Collect a bottle of sodium hydroxide and balloon from the front of the lab
  3. Pour enough sodium hydroxide into the flask to cover the aluminium
  4. Put a balloon over the end of the flask
  5. Wait 5 minutes
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Step 3: Exploding Balloons

  1. Safety Considerations?
    • Explode them one at a time in the middle of the classroom
    • Stand well back
    • Cover ears
    • Safety glasses
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