Other papers related to the lab can be found under the related papers heading.
How much Red Dye is there in my soft drink?
Hy-poth-e-sis
Hypothesis- A guess (guesses become more educated as more is learned about the processes involved in the experiment) about how an experiment will turn out. For this experiment you might phrase a hypothesis in this way…
"There is a relationship between the concentration of red dye and its absorbance of light at a specific wavelength."
That's a pretty general statement. You have no idea what that relationship might be, but you still want to prove that there is a relationship.
So you might want to make some specific predictions that, if proved to be true, would support your hypothesis. These are your experimental predictions.
You might phrase one of them this way, "If I manipulate the concentration of my red dye, I'll find a corresponding change in absorbance."
From there, you can go even further and suggest what that corresponding change might look like (i.e., is the relationship linear, positive or negative, nonlinear; what is the shape of the graph, etc.)
Additionally, you can make other hypotheses that challenge or complement your original one. These are called alternative hypotheses.
If, for any reason, your experimental predictions prove to be untrue (i.e., you find no corresponding change in absorbance of light when you manipulate concentration), then you might consider rejecting your hypothesis in favor of its logical opposite (also known as the null hypothesis). In this case, it would be that there is no relationship between the concentration of bluedye and its absorbance of light at a specific wavelength.