This question refers to spectroscopy.

So why are certain colors used in this experiment? For example, why would a yellow light be used instead of a green light?

And if I were to use a green light instead of a yellow light, would absorbance values be higher or lower?

See your post above. It makes it a lot easier to answer your questions if you use the same screen name. Sammy and Marlene are not the same in my book.

In spectroscopy, different colors of light are used for specific reasons based on their wavelengths. When a sample is exposed to light, it can absorb certain wavelengths, resulting in a decrease in the intensity of that particular wavelength. The wavelengths at which a sample absorbs light can provide information about its chemical composition and properties.

Yellow and green lights have different wavelengths, with yellow light having a longer wavelength than green light. The choice of color depends on the specific properties being studied. For example, yellow light might be chosen to study a substance that absorbs light predominantly in the green region, as the wavelength of yellow light is close to that of green light. By using a yellow light source, any changes in the absorbance of green light caused by the sample can be easily detected and measured.

If you were to use a green light instead of a yellow light, the absorbance values may be higher or lower depending on the specific substance being studied. It is important to note that the absorbance values are related to the sample's ability to absorb light at a specific wavelength. Therefore, changing the wavelength of light can affect the interaction between the light and the sample, potentially resulting in different absorbance values.

To determine the effect of using a green light instead of a yellow light, you would need to compare the absorbance values obtained with both light sources and analyze the results. This comparison would provide insight into how the sample interacts with light at different wavelengths and help understand the relationship between color and absorbance in your spectroscopic experiment.