In our Ancient Egyptian Topic, we have been learning about Egyptian Mummies.
We thought it would be fun to do some investigating in science, using similar mummifying salts as the Natron salt that the Egyptians used. (Natron salt) came out of the ground. Each group had to mummify two pieces of apple. They had to mark them A and B and choose from the different recipes of Baking Soda and Salt combinations. Some groups tried all salt, or all baking soda, some more of one that the other, or equal amounts.
We had to make predictions what would happen, and write our ideas down. After three days, one week, two weeks and a month we tip them out into an ice cream container, brush off the salt/soda, observe and weigh the apple pieces. We record the weights on sheet.
After two weeks, most are looking brown and dry, just like a mummy skin. But some recipes have made the apple go mouldy and a bit damp. All have lost weight. We have a control apple piece which is just sitting in the jar with no salts. It has lost weight too, but not as much as the others.
We will post an update after the final examination and weighing in two more weeks.
Here are some photos of our science.
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| Brushing off the salt/soda |
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| Our control Apple |
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