Chemistry Atmosphere Revision

Gasses

Nitrogen - 80%

Oxygen - 20%

Argon - 0.93%

Carbon Dioxide - 0.04%

Early Atmosphere

Volcano activity 1st Billion years

Intense volcano activity.

The relreased gas (mainly CO2) that formed to early atmosphere and water vapour that condensed to form the ocean.

Other gasses

Released from volcanic eruptons.

Nitrogen was also released, gradually building up in the atmosphere . Small proportions of ammonia and methane also produced.

Reducing carbon dioxide in the atmosphere

When the oceans formed, carbon dioxide disollved into it.

This formed carbonate precipitants, forming sediments. This reduced carbon dioxide in the atmosphere.

Atmospheric pollutants from fuels

Combustion of fuels

Sourceof atmospheric polutants. Most fuels may also contain some sulfur.

Carbon dioxide, water vapour, carbon monoxide, sulfur dioxide and oxides of nitrogen

Solid particles and unburned hydrocarbons released when burning fuels.

Greenhouse gases

Carbon dioxide,water vapour and methane

Examples of greenhouse gasses that maintain temparatureson earth in ordeerto sustain life.

The Greenhouse effect

he greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without its atmosphere. Radiatively active gases (i.e., greenhouse gases) in a planet's atmosphere radiate energy in all directions.