Chemistry and Layers of the Atmosphere

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What is the primary composition of the atmosphere near the Earth's surface?

Nitrogen and oxygen (correct)

Hydrogen and helium

Methane and water vapor

Ozone and carbon dioxide

Which layer of the atmosphere is known for the ozone layer that absorbs harmful UV-B radiation?

Mesosphere

Troposphere

Thermosphere

Stratosphere (correct)

In which layer of the atmosphere do most meteors burn up?

Thermosphere

Troposphere

Stratosphere

Mesosphere (correct)

What process occurs when a molecule in the upper atmosphere absorbs solar radiation, causing an electron to be ejected?

Photoionization Signup and view all the answers

Which layer of the atmosphere is known for the formation of auroras?

Thermosphere Signup and view all the answers

What is the process called when a chemical bond in a molecule is broken due to the absorption of a photon?

Photodissociation Signup and view all the answers

What is the primary function of the ozone layer in the Earth's atmosphere?

To absorb harmful UV rays before they reach the Earth's surface Signup and view all the answers

Which type of ultraviolet radiation is the most dangerous and completely absorbed by the ozone layer?

UVC Signup and view all the answers

What is the relationship between the bond enthalpy of oxygen and nitrogen, and their reactivity?

Oxygen has a much lower bond enthalpy and is therefore more reactive than nitrogen. Signup and view all the answers

What is the maximum wavelength of light, in nanometers, that has enough energy per photon to dissociate the O2 molecule?

$242$ nm Signup and view all the answers

What is the primary mechanism by which the presence of ions in the upper atmosphere enables long-range radio communication?

The ions in the upper atmosphere create a conductive layer that allows radio waves to propagate more efficiently. Signup and view all the answers

What is the primary process by which oxygen molecules are converted into ozone (O3) in the stratosphere?

Collision of free oxygen atoms with oxygen molecules Signup and view all the answers

Chemistry and Layers of the Atmosphere

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Questions and Answers

What is the primary composition of the atmosphere near the Earth's surface?

Which layer of the atmosphere is known for the ozone layer that absorbs harmful UV-B radiation?

In which layer of the atmosphere do most meteors burn up?

What process occurs when a molecule in the upper atmosphere absorbs solar radiation, causing an electron to be ejected?

Which layer of the atmosphere is known for the formation of auroras?

What is the process called when a chemical bond in a molecule is broken due to the absorption of a photon?

What is the primary function of the ozone layer in the Earth's atmosphere?

Which type of ultraviolet radiation is the most dangerous and completely absorbed by the ozone layer?

What is the relationship between the bond enthalpy of oxygen and nitrogen, and their reactivity?

What is the maximum wavelength of light, in nanometers, that has enough energy per photon to dissociate the O2 molecule?

What is the primary mechanism by which the presence of ions in the upper atmosphere enables long-range radio communication?

What is the primary process by which oxygen molecules are converted into ozone (O3) in the stratosphere?

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