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702334
Chemistry - C1
Descrição
GCSE Chemistry Mapa Mental sobre Chemistry - C1, criado por rosie-noble em 01-04-2014.
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chemistry
chemistry
gcse
Mapa Mental por
rosie-noble
, atualizado more than 1 year ago
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Criado por
rosie-noble
mais de 10 anos atrás
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Resumo de Recurso
Chemistry - C1
Atom
Smallest particle of a substance which can have its own characterstic properties
Different elements (atoms) react and combine to form a compound
It's usually difficult to seperate them
Atoms are held together by a chemical bond
Molecule
Larger particle formed by them chemical combination of two or more atoms
Atmosphere
78% Nitrogen
21% Oxygen
1% Trace gases
0.04% Carbon dioxide
Early Earth
1. It was created by a volcanic atmosphere
2. When earth cooled the water condensed to form oceans and lakes
3. Photosynthetic organisms evolved in oceans and added oxygen to the atmosphere and removed carbon dioxide
4. Some carbon dioxide was removed by dissolving in the oceans forming sedimentary rocks
Pollutants
Carbon Dioxide: Environment - Traps heat in the Earth's atmosphere
Nitrogen Oxides: Environment - Causes acid rain.Humans - Causes breathing problems
Sulfur Dioxide: Environment: Causes acid rain
Particulates: Environment - Make buildings dirty. Humans - Asthma can get worse and it can cause lung infections
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