We have been learning about mummification and how the Egyptians used a type of salt called natron to dry out and help preserve the mummy.

We conducted an experiment using 2 tomatoes.

First we weighed each tomato, then scooped out all of the seeds and juice. Next we covered one in a mixture of bicarbonate of soda and salt and left one with nothing on it.

After 2 weeks we looked at both tomatoes.

We found that the one that had been covered in the salt mixture was slightly lighter than the one that wasn’t. It’s skin had gone all hard and wrinkly. The other tomato had started to go mouldy and smelled horrible. The salt mixture had gone all hard as well as it had absorbed all of the liquid.