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Atoms actually emit light by reflecting light. I just did a science project on this and when I researched it, atoms take the sun's rays and absorb them. Darker colours, with darker atoms, such as blue, red, and black, lock in more of the sun's rays and lighter colours, with lighter atoms, such as yellow, white, and orange, reflect more of the light and the sun's rays. That's why if you put a black car and a white car next to each other in a parking lot for an hour and you come back and the black car feels hotter than the white car.
Atoms also emit light in another way. The electrons in an atoms have certain values of energy, and are not all the same. Scientists think of them as occupying points on a 'ladder' of energy values. When an atom gains energy, for instance being heated such as flames, hot metal and stars, the electrons of the atom increase in energy levels. They will then drop back down the 'ladder' and emit energy as a photon - a single packet of energy. The energy of the photon is equal to the difference in energy between the electrons original energy level and its new level. The higher the drop down the 'ladder' the more energy the electron loses and so the more energy in the emitted photon. This changes it's wavelength in the electromagnetic spectrum. That's why metal first glows red, as it emits the lower red part of the spectrum, and increases to white hot, as it emits all different wavelengths. The combination of colours build up to form the colour white. Very hot stars can even glow blue, only emitting the top end of the spectrum. Each element in the Periodic Table emits (and absorbs, in the reverse process, reflecting photons of the wrong energy value) different parts of the spectrum, giving us the ranges of colour we see. In 1868, by looking at the parts of the spectrum emitted from the corona of the sun during a total eclipse, Helium was discovered, as it did not match any other element known to man.
What else can I help you with?
What happend when an electron in a hydrogen atom moves to a higher level?
It immediately falls back to the ground state and emits a photon of light.
An atom that undergoes excitation and de-excitation emits?
An atom that undergoes excitation and de-excitation emits photons of light. When an electron in an atom absorbs energy and moves to a higher energy level (excitation), it eventually returns to its original state (de-excitation) and emits a photon of light corresponding to the energy difference between the two levels.
When the electron emits lights does the electron move up to a higher energy level or down to a lower energy level?
In the Bohr model of the atom, an electron emits a photon when it moves from a higher energy level to a lower energy level.
What is the process in which an electron returns to a lower energy level and emits a photon?
This process is called "emission." When an electron transitions from a higher to a lower energy level within an atom, it releases a photon of light corresponding to the energy difference between the two levels. This emitted photon carries away the energy that the electron lost during the transition.
What does an electron do when a photon is released by an atom?
When an electron releases a photon, it moves to a lower energy level within the atom. This process is known as an electron transition. The released photon carries the energy difference between the initial and final energy levels of the electron.
What happend when an electron in a hydrogen atom moves to a higher level?
It immediately falls back to the ground state and emits a photon of light.
An atom that undergoes excitation and de-excitation emits?
An atom that undergoes excitation and de-excitation emits photons of light. When an electron in an atom absorbs energy and moves to a higher energy level (excitation), it eventually returns to its original state (de-excitation) and emits a photon of light corresponding to the energy difference between the two levels.
Which subatomic particle is most easily lost from an atom?
The photon probably may be the answer. Every time an electron of an atom gets "excited" after gaining energy, it emits a photon to reach, or rather obtain the ground state(energy levels)
When the electron emits lights does the electron move up to a higher energy level or down to a lower energy level?
In the Bohr model of the atom, an electron emits a photon when it moves from a higher energy level to a lower energy level.
Is energy is conserved when an atom emits a photon of light?
Energy is ALWAYS conserved. The appropriate sum of mass and energy is always conserved. If an atom emits a photon, the atom has less energy/mass, and the universe minus that atom has more energy/mass. It's like carrying some energy from here to there.
How can a photon be destroyed or created?
A photon can be created when an electron transitions to a lower energy level and emits a photon. Conversely, a photon can be absorbed and "destroyed" when it is absorbed by an electron, causing the electron to transition to a higher energy level.
What change occurs with the atom when it is emitting light?
When an atom emits light, an electron in the atom transitions from a higher energy state to a lower energy state. This transition releases energy in the form of a photon of light. The atom remains the same element before and after emitting light.
What is the process in which an electron returns to a lower energy level and emits a photon?
This process is called "emission." When an electron transitions from a higher to a lower energy level within an atom, it releases a photon of light corresponding to the energy difference between the two levels. This emitted photon carries away the energy that the electron lost during the transition.
Quanta of light emitted from 1 electron drops from the 7th to 2nd energy level?
When an electron drops from the 7th to the 2nd energy level in an atom, it emits a photon of light. The energy of this photon corresponds to the difference in energy between these two levels. The amount of energy difference is specific to the atom involved, and the photon emitted will have a specific wavelength and color based on this energy difference.
When an electron in an atom of hydrogen moves from the second to the first principal energy level the result is the emission of?
When an electron in a hydrogen atom moves from the second to the first energy level, it emits a photon of light with a specific energy corresponding to the difference in energy levels. This process is known as electronic transition or photon emission.
What happens to excess energy when the electron jumps from a higher energy orbit to a lower energy orbit in the hydrogen atom?
The electron emits a photon of light which we can see in a spectrograph as color. Four colors are normally seen in a hydrogen atom subjected to energy.
What does the change of an atom from an excited state to the ground state always require?
An atom emits a photon (particle of light) when transitioning from a ground state to its excited state. To obey conservation of energy, the energy gained by the atom when an electron moves to a lower energy level is equal to the energy it loses in emitting the photon. (The energy of a photon is E = hf, where E is the energy, h is Planck's constant, and f is the frequency of the photon.) Conversely, when an atom absorbs a photon (as is the case in absorption spectra), the electron absorbing the photon moves to a higher energy level.
