Spectroscopy

What is the main principle of spectrophotometry?

• Light reflects off surfaces

• Light interacts with matter and gets absorbed

• Light travels at different speeds in different mediums

• Light can be split into different colors without interaction

In spectrophotometry, what happens to light when the concentration of a substance in a solution increases?

• More light is transmitted through the solution

• Less light is absorbed by the solution

• More light is absorbed and less light is transmitted

• The wavelength of light changes

What do peaks in an absorption spectrum indicate?

• Wavelengths where light is transmitted

• Wavelengths where light is absorbed

• The total energy of the light

• The concentration of the solvent

What is the correct formula for Beer’s law?

• A=e+b+c

• A=ebc

• A=e/bc

• A=b+c+e

What does the y-axis of an absorption spectrum represent?

• Wavelength of light

• Concentration of the solution

• Absorbance of the sample

• Volume of the solvent

Which of the following fields commonly uses spectrophotometry?

• Astronomy

• Material and chemical engineering

• Music theory

• Graphic design