Amazing Science No 3 CHEMICAL REACTION – ENERGY YEAST AND SUGAR

So here we are with our third experiment – looking at chemical reaction and energy.  After seeing Professor Bunsen work his magic with all his amazing experiments , we thought we investigate how chemical reactions can create energy. This experiment required placing a teaspoon or two of yeast into a plastic bottle and then adding some water – one cube of sugar before placing a balloon over the lid. We all were hoping the balloons would rise.

Student thoughts /predictions –  ”I think it will rise because of the yeast – isn’t meant to make things rise? Will H          ” The balloon will pop!”  Oliver                It will lean ‘- Keira

Results – WOW WEE!  – amazing – the balloons all rose upright – some quicker than others – some bigger – some smaller.

Factors which we observed which influence the outcome:

  • the amount of yeast
  •  the size of the bottle
  • the amount of water
  • mixing sugar with the yeast

 

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