Mummifying Tomatoes!

The Dragonflies (Year 2) visited the Science Labs today to learn about the Ancient Egyptian art of mummification – this is the process of preserving something and stopping it from rotting.

DFMummies 014 - CopyDFMummies 041To investigate the science of mummification Mr Mount, Head of Biology, helped us mummify tomatoes.

We pretended our tomato was the head of an Egyptian pharaoh and drew a little face on it.

First we had to clean the tomatoes to make sure there were no germs: germs start the rotting process.  Then we scooped out the watery insides – we pretended they were brains!  It is important to dry something out to stop it from rotting – so we would need some natron salt to absorb the moisture from the tomatoes.  Natron salt is found in Egypt but luckily Mr Mount knew how to make some in the science lab.

The children used little tools to pack their tomatoes with natron salt and placed them in a beaker, packing more salt around the outside of the tomato to dry the outside too.

Egyptian pharaohs were left to dry for 40 days before they were wrapped in linen bandages – our tomatoes are much smaller than pharaohs so we decided to leave them 20 days.

We made predictions, thinking about what the tomato will look like in 20 days, would it be bigger, smaller, smooth or bumpy?  I wonder if we will be surprised?