Task for Science Online Lesson

Nitrogen + Oxygen -> Nitrogen Dioxide

N₂ (g) + O₂ (g) -> 2NO₂(g)

The harmful compound that I had identified is Nitrogen Dioxide. Covalence bonding is involved.

At 150 °C, NO₂ decomposes with release of oxygen via an endothermic process. Oxygen and Nitrogen are very harmless. We breathe in Oxygen every second to carry out respiration. Nitrogen is used to make fertilizer, ammonia, nitric acid etc. However, when oxygen combines with Nitrogen, a harmful compound is made. Both of the elements form Nitrogen Dioxide.

Nitrogen Dioxide can be produced most commonly in these two ways. Firstly, in a car engine or a factory where the temperatures are very high, the nitrogen combines with the oxygen in the air to form Nitrogen Dioxide (NO₂). Nitrogen Dioxide is also called Nitric Oxide.

Secondly, during a thunderstorm, the heat released by lightning causes nitrogen and oxygen in the air to react, to form oxides like nitrogen monoxide and nitrogen dioxide.

Nitrogen Dioxide is harmful it can cause irritation to the eyes and can cause breathing difficulties by irritating the lungs.

Nitrogen Dioxide will also form acid rain which will destroy building, aquatic life and plants.

Below is the dot and cross diagram that I had done.