As part of our topic on the human body Year 5 learnt about chemical digestion. We did an expirment to find out what happens to the rate of digestion if we add more enzyme. As well as answering our aim, we also worked on building on our practical skills and ensuring we are accurate in all our measurements
We measured out some starch solution.
Then we placed iodine in each well of a spotting tile.
We could then add the enzyme (amylase) to our starch and start the timer. We place some of this mixture in a well of the spotting tile every 20 seconds. If the iodine turned black the starch had not yet been digested.
We found that the mixture with most enzyme was the first to be completely digested.
