Year 6 used limewater to see if maggots respire.
They put limewater in a jam jar
And covered the top with a cloth.
and emptied some maggots into a dip in the cloth.
There were 20 maggots in each jar.
Carefully make sure the maggots are all in.
And screw the lid on tight.
Now we have to leave it for 24hrs so the maggots can get to work.
If the maggots respire they will turn food and oxygen into carbon dioxide and the carbon dioxide will turn the limewater from colourless to cloudy.