C9: The Chemistry Of The Atmosphere Flashcards
What percentage of Nitrogen is in the air?
78%
What percentage of Oxygen is in the air?
20%
What percentage of Argon is in the air?
0.97%
What percentage of Carbon dioxide is in the air?
0.03%
What percentage of Water vapour is in the air?
0.4%
The atmosphere today(2):
- The proportions of gases in the atmosphere have stayed constant for 200 million years
- Water vapour amounts varied from (0-3%)
The Early Atmosphere(4):
- Intense volcanic activity that produced nitrogen
- When the oceans formed, carbon dioxide dissolved in the water
- Low oxygen
- Small proportions of methane and ammonia
Greenhouse Gases(4):
- Ozone
- Methane
- Carbon dioxide
- Water Vapour
How long was there no oxygen?
3 1/2 billion years
Carbon footprint
The total amaount of carbon dioxide and other greenhouse gases is emitted by a product service or event
Factors that reduce carbon footprint(4):
- Wasting less energy
- Carbon capture and storage
- Carbon taxes
- Use of Carbon-neutral products
What is the environmental effect of Sulfur dioxide on the atmosphere?
Acid rain
What is the product of incomplete combustion?
Carbon monoxide
What is the great Oxigynation event?
It refers to the period of time where the Cyano-bacteria produced oxygen
Cyano bacteria produced oxygen but it didn’t go into the atosphere straight away. where did it go?
It reacted and was captured by the iron in rocks wich produced iron oxide
Cyano bacteria produced oxygen but it didn’t go into the atosphere straight away. where did it go?(2):
- It reacted and was captured by the iron in rocks wich produced iron oxide
- Once all the oxygen was trapped, the excess oxygen entered the atmosphere
The atmosphere(definition):
The envelope of gases surrounding the earth or another planet
Atmospheric functions(3):
- Absorbs and interacts with harmful electromagnetic radiation
- Keeps the earth warm
- Protects from the suns rays
Fossil fuels(definition):
An unrenewable energy source that has been around for millions of years
What do all fossil fuels contain?(2):
- Carbon
- Hydrogen
Name 4 atmospheric pollutants:
- Carbon monoxide
- Methane
- Sulfur dioxide
- Particulates
Why do we not worry abot the amount of water vapour in the atosphere?
The water cycle removes ift from the atmosphere
Methane levels increase because…(2):
- Increased population leads to increased intensive farming
- Increased landfill and waste decomposition by bacteria
Carbon dioxide levels increase because of…(5):
- Complete combustion
- Respiration
- Fossil fuels
- Decomposition
- Deforrestation