null
US
Iniciar Sesión
Regístrate Gratis
Registro
Hemos detectado que no tienes habilitado Javascript en tu navegador. La naturaleza dinámica de nuestro sitio requiere que Javascript esté habilitado para un funcionamiento adecuado. Por favor lee nuestros
términos y condiciones
para más información.
Siguiente
Copiar y Editar
¡Debes iniciar sesión para completar esta acción!
Regístrate gratis
4679126
GCSE AQA Chemistry 1 Fuels & The Environment
Descripción
Mind map showing information about crude oil (uses and properties), how it's used as a fuel and environmental problems.
Sin etiquetas
gcse
aqa
chemistry
chemistry unit 1
fuels
environment
crude oil
science
chemistry
chemistry 1
gcse
Mapa Mental por
Lilac Potato
, actualizado hace más de 1 año
Más
Menos
Creado por
Lilac Potato
hace casi 9 años
568
31
0
Resumen del Recurso
GCSE AQA Chemistry 1 Fuels & The Environment
Crude Oil
Mixture of hydrocarbons
Fuels made of carbon & hydrogen
No chemical bonds - keep their original properties
Can separate using fractional distillation
Column works continuously - heated crude oil pumped in at bottom
Vaporised oil rises up & various fractions tapped off as they condense
Properties
Made up of hydrocarbons - alkanes
Chains of carbon atoms surrounded by hydrogen atoms
Different length chains
Carbon forms 4 bonds & hydrogen forms 1
First 4: Methane, Ethane, Propane, Butane
Forms as many bonds as possible - saturated
Shorter molecules - more runny (less viscous)
Shorter molecules - more volatile
Shorter molecules - more flammable
General formula: CnH2n+2
Uses
Volatilty - refinery gas - good as bottled gas
Petrol - higher boiling point - liquid
Viscous hydrocarbons - lubricants
Crude oil as a fuel
Burn cleanly so good fuels
Transport, central heating, power stations
Also provides raw materials for making chemicals - plastics
Alternatives are possible but things are set up for oil fractions - easier, cheaper & more reliable
Will run out - non-renewable fuel
New reserves being discovered & technology improving
Should start conserving & finding alternatives
Environmental problems
Burning fossil fuels
Power stations & cars
hydrocarbon + oxygen --> carbon dioxide + water vapour
Energy (heat) also produced
If fuel contains sulphur impurities - sulphur dioxide released
If enough oxygen - complete combustion, if not then partial
Soot, unburnt fuel & carbon monoxide released
Global Dimming - particles reflect sunlight back into Space
Causes acid rain - sulphur dioxide mixes with clouds to form dilute sulphuric acid
Same with nitrogen oxides
Plants & animals die, kills trees, damages limestone buildings & statues & possible health probs
Reducing sulphur emissions
Can be removed before burning - £££
Power stations have Acid Gas Scrubbers - take harmful gas out before release
Increasing carbon dioxide = Climate Change
Causes global warming, changing rainfall patterns, flooding
Alternative fuels being developed
Ethanol - plant material - biofuel from fermentation
Carbon neutral, engines need to be converted, stop growing crops
Biodiesel - vegetable oils
Carbon neutral, don't need to convert engines, can't make enough to replace diesel, expensive
Hydrogen gas - electrolysis of water
Clean, need special engine, not widely available, hard to store
Mostrar resumen completo
Ocultar resumen completo
¿Quieres crear tus propios
Mapas Mentales
gratis
con GoConqr?
Más información
.
Similar
GCSE - AQA: C1.1 The Fundamental Ideas in Chemistry
Olly Okeniyi
GCSE AQA Chemistry 2 Salts & Electrolysis
Lilac Potato
Chemistry 6 Extracting Vegetable Oil Core GCSE AQA
Chloe Roberts
Enzymes and Respiration
I Turner
Testing for ions
Joshua Rees
Flame tests
Joshua Rees
Crude Oils and others quiz
Dale George
Tests for Positive Ions: Flame Test Colours
bella.mort
Test for positive ions
bella.mort
Making Salts Flow Chart
Joanna van Dyk
exothermic and endothermic reactions
janey.efen
Explorar la Librería