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St Joseph's NS Mardyke, Cork

Science Week Experiments

24th Nov 2025

Making a volcano for science week


 You will need: Brown clay, vinegar, red food dye, baking soda.


Method


  1. Make a hill with the clay.
  2. Make a hole at the top of the volcano. 
  3. Put the 5 spoonfuls of baking soda into the volcano. 
  4. Add 6 to 7 mls of   red food dye. 
  5. Pour vinegar into the top of the volcano
  6. Watch the chemical reaction

Important: Clean up afterwards


Other experiments we all did this week, included showing that oil and water don’t mix by making a lava lamp, showing that hot water dissolves the colour off of Skittles faster than cold water.


ET and JH