Nitrogen Cycle
What are the two conditions under which nitrogen will react with oxygen?
When there is high temperatures and pressures.
What are the two compounds that are formed when nitrogen combines with oxygen?
Nitric oxide (NO) and nitrogen dioxide (NO2).
How does nitric acid (HNO3) form?
When it rains the water will react with HNO3.
Why is nitric acid (HNO3) important?
Nitric acid utilizes plant's nutrients.
What percentage of the air we breathe is nitrogen?
79%
Even though considerable nitrogen is available in the air, most plants do not use the nitrogen (N2) found in the air. Why not?
They need a fixed form.
In what compounds can plants use nitrogen?
Nitrate ions (NO3−), ammonium ions (NH4+) , and urea (NH2)2CO
How do animals get the nitrogen they need?
From eating plants.
Atmospheric nitrogen (N2) is pretty inert. This means that it does not easily break apart. When molecules do not break apart easily, it is difficult (or impossible) for organisms to use them as a nutrient source. As a result, nitrogen fixation is the term used to describe the process of breaking up N2.
What is atmospheric fixation?
When lightning strikes it breaks nitrogen molecules apart and makes it capable for oxygen and nitrogen to combine. Atmospheric nitrogen fixation contributes 5– 8% of the fixed nitrogen.
What is industrial fixation?
At a temperature of 600°C and a catalyst, atmospheric nitrogen and hydrogen can be combined to form ammonia (NH3). Ammonia can be used as fertilizer, but most of it turns to urea and ammonium nitrate (NH4NO3).
What is biological fixation?
You can only find fixed nitrogen in certain bacteria and archaea.
Why is nitrogen needed by plants and animals?
For proteins and amino acids.
When there is high temperatures and pressures.
What are the two compounds that are formed when nitrogen combines with oxygen?
Nitric oxide (NO) and nitrogen dioxide (NO2).
How does nitric acid (HNO3) form?
When it rains the water will react with HNO3.
Why is nitric acid (HNO3) important?
Nitric acid utilizes plant's nutrients.
What percentage of the air we breathe is nitrogen?
79%
Even though considerable nitrogen is available in the air, most plants do not use the nitrogen (N2) found in the air. Why not?
They need a fixed form.
In what compounds can plants use nitrogen?
Nitrate ions (NO3−), ammonium ions (NH4+) , and urea (NH2)2CO
How do animals get the nitrogen they need?
From eating plants.
Atmospheric nitrogen (N2) is pretty inert. This means that it does not easily break apart. When molecules do not break apart easily, it is difficult (or impossible) for organisms to use them as a nutrient source. As a result, nitrogen fixation is the term used to describe the process of breaking up N2.
What is atmospheric fixation?
When lightning strikes it breaks nitrogen molecules apart and makes it capable for oxygen and nitrogen to combine. Atmospheric nitrogen fixation contributes 5– 8% of the fixed nitrogen.
What is industrial fixation?
At a temperature of 600°C and a catalyst, atmospheric nitrogen and hydrogen can be combined to form ammonia (NH3). Ammonia can be used as fertilizer, but most of it turns to urea and ammonium nitrate (NH4NO3).
What is biological fixation?
You can only find fixed nitrogen in certain bacteria and archaea.
Why is nitrogen needed by plants and animals?
For proteins and amino acids.