Introduction & Background Research
Sugar is a leading factor into why soft drinks have such damaging effects on our teeth when we drink them, so for my experiment I will test whether sugar levels actually affect the corrosiveness of soft drinks. To make the experiment more concise I will narrow the range of soft drinks to one brand, Coca Cola, and will test all 5 types; Regular Coke, Coke Zero, Diet Coke, Vanilla Coke and Coke Life, with a control of water. Since there are other factors that take part into the corrosive power of soft drinks, such as phosphoric acid, the use of only one brand of drink will make the experiment more reliable. The level of phosphoric acid in any soft drink has never been disclosed to the public, thus making this impossible to test, whereas sugar is clearly labelled. The sugar levels per 100ml in the Coca Cola’s are:
· Regular Coke – 10.6g · Coke Zero – 0g · Diet Coke – 0g · Vanilla Coke – 10.9g · Coke Life – 6.6g Before I considered starting the experiment, I needed to find out whether coke can actually corrode rust and how to make the rust on nails. After researching on the internet, I found out that coke is able to corrode rust and the easiest way to make rust on nails is to submerge them in a 2:1 bleach to vinegar ratio. A lot of experiments have been conducted to determine how efficient coke is at removing rust and all these tests have showed that it is effective, possibly more effective than generic rust removal techniques. However no tests have been done to test the difference between the 5 types of Coca Cola. |
Conducting the Investigation | Video
Part 1
Part 2
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