Penny Vs Liquids – Science Fair 2017

Next week (wb 13th Feb) is science week at Ruby’s school and the theme this year is change. Last year she asked if she could take part in the science fair but by the time we found out it was too late to do an experiment and write it up however this year we had plenty of time to plan something and create a science fair presentation, we sat down and had a think about what we could do, we decided on finding out how a copper coin is affected by different liquids.

We didn’t have any of the “Materials” that we needed in the house so we went to the shop to collect what we needed, for this experiment we needed the following;

  • Lemon Juice
  • Diet Coke
  • Classic Coke
  • Water
  • Vinegar
  • Clear Cups (we selected clear so we could watch what was happening)


We got all of the cups set out on the counter and labelled them with a post-it note so that Ruby knew which liquid was in which cup, we placed each of the coins on the note and took a picture, this was mainly for evidence so we could show how the coin had changed over the course of the experiment.


Ruby put all of the coins into the liquids and she decided that she was going to leave them for 5 days before removing them from the liquid and seeing what had happened.


We then needed to make a presentation board so that she could show her findings at the fair, we got some mount board from The Range and some coloured card to back the headings, we set the board out to show the question (what she wanted to find out) her thoughts (what she thought was going to be the outcome) what she did (the steps she took to get to the outcome) and what happened (to show what actually happened to each coin in it’s respective liquid)


The experiment is ongoing and we don’t have the results yet, but as soon as we do Ruby is going to update her presentation which will be perfect timing for the fair.

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