Chemistry quiz Light through photoelectric effect

Can you explain the importance of quantum dots and how they make use of electrons moving in an atom?

The movement of electrons is tightly controlled in the quantum dots and the quantization of the electron’s causes the energy to rise or fall. 

Can you describe how a semiconductor works in a transistor to make electronic devices receive input from users?

They allow the controlled flow of electricity. They act as switches which are how the user and device interact. 

Can you compare and contrast the different reasons things glow in the dark (fluorescence)

It glows in the dark because they absorb high energy UV light and emit low energy light in the dark.

Can you compare and contrast the different reasons things glow in the dark (phosphorescence)

It glows in the dark because when the light is turned off, the electrons are still excited as they slowly fall.

Can you compare and contrast the different reasons things glow in the dark (chemiluminescence)

It glows in the dark because after the electrons react to the chemicals the electrons remain excited.

Can you compare and contrast the different reasons things glow in the dark (bioluminescence)

It glows in the dark because of the natural chemical reaction that produces light without heat using luciferin and oxygen.

Can you explain how the photoelectric effect was at work in the flame test lab?

The different chemicals mixed together to create a color. The electrons were excited and the amount of energy the chemical loses as it falls emits a certain color.  

Can you explain how the photoelectric effect was at work in the spectroscopy lab?

The different colors were shown based on the wavelengths in the lights and the amount of electricity there was running through the chemical. 

Can you explain how the photoelectric effect was at work in the solar cell lab?

The solar cells convert light energy into electrical energy which is needed to power devices.

Can you identify an element based upon its atomic emission spectrum?

You need to excite the electron using heat or electricity, then observe the lines of light emitted and compare them to the wavelength of each element. 

Can you describe the photoelectric effect using appropriate scientific vocabulary?

Electrons are ejected from the surface of a material when it is exposed to light or electromagnetic radiation of sufficient energy. 

Can you describe Bohr's model of the atom?

Negatively charged atoms revolve around a positively charged nucleus in an orbit/shell.