In a pepsi bottle, we added : (in order)
Honey
Coconut cream
Shampoo (coloured hot pink)
Milk (coloured orange)
Maple syrup
Soap (coloured pink and white)
Cough syrup
Water (coloured yellow)
However, the experiment failed, we were unable to identify liquids with similar colours (e.g. Maple syrup and cough syrup) and the liquids mixed with each other due to the lack of proper pouring.
We started the experiment a second time. This time we knew which liquids were denser. We poured the liquids in in this order :
Honey
Cough syrup (coloured reddish brown)
Maple syrup
Milk (coloured orange)
Shampoo ( Hot pink )
Soap ( white and pink mixed)
Water (yellow)
Oil
We excluded coconut cream as we saw that it was quite mixed with another liquid from our previous experiment. Also, water turned from Yellow to red due to the colouring in soap.
This second experiment was better compared to the first one as we knew which liquids to pour in first so that it wouldn't get mixed together easily.
However, many of the colours were similar and it was hard trying to differentiate them due to the like colours. The amount of liquids put in were also very little as we didn't prepare enough. There were also liquids such as oil, maple syrup, soap, shampoo and cough syrup found on the inner surface of the bottle. It looked unattractive and we decided to let it settle for the night.
The experiment was conducted a third time. This time, we had limited materials. We ran out of cough syrup and maple syrup and we had to make use of different brands of soaps.
The liquids were poured in in this order:
Honey
Milk
Shampoo
Washing Detergent
Water
Oil
Rubbing alcohol
Ethanol
This density ladder was the prettiest one. Although it had liquids at the side, the liquids slid down easily and settled the fastest
However the amount of liquids weren't enough and rubbing alcohol was mixed with ethanol. Some of the rubbing alcohol may have evaporated in the bottle
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