i realised quite recently that i am yet to write up my method fully. so here goes


Aim- To see if certain preservatives prevent the growth of bacteria.

Hypothesis- The addition of a preservative will prevent the growth of bacteria

Equipment-5 identical clear plastic cups, 1 litre of boiling water, 4 chicken stock cubes, measuring cup, big jug, tray, masking tape and texta

Method

1. Dissolve 4 cubes of chicken stock in a jug with 1 litre of hot water
2. Pour the mix into 5 cups, each cups MUST have the same amount (150mL)
3. Add 2 tablespoon of each preservative in a different cup. Make sure to label the cups with a label that clearly indicates the type of preservative added.
4. Add no preservative into the 5th cup because this is the control. Clearly label this cup as the control.
5. Leave the 5 cups in the same warm place on a tray for 5 days.
6. At the end of the 5 days look at the cups and observe which one has the most amount of mould/bacteria growing on top of it.



that should just about do it.
and today is the 5th day that the cups have been left out on the tray. so tomorrow i will be going to collect my results.
so, you only have to wait a bit longer until i post the results of my experiment up =)

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