20 May 2022

Comparing the properties of oil fractions


 I have done this experiment many times and each time with this source of synthetic crude oil the first fraction burns and so does the second, but not the third of the fourth but the fifth and sixth do

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The Möbius Strip — A Shape With Only One Side

  The Möbius Strip — A Shape With Only One Side Best level: GCSE Maths upwards Area: Topology / mathematical thinking Equipment: Paper...