Fuels Flashcards
Indicator for water
Anhydrous copper sulfate turns from white to blue
Crude oil
Thick black liquid found in sedimentary rocks
Fossil fuel
Mixture of hydrocarbons
Non renewable
Word equation for combustion of hydrocarbon
Hydrocarbon+ oxygen—–> wate + co2
Soot problems
Clog pipes, can cause fires in chimneys
Lung disease
Cause of acid rain
Hydrocarbons went burnt release sulfur which reacts with air to form sulfur dioxide this dissolves in rain making it more acidic
Effects if acid rain
Makes rivers more acidic, harming organisms
Damages trees
Speeds weathering of buildings
Reducing acid rain
Reducing amount of sulfur in fuels
Removing acidic gases from power station emissions
Mean surface temp of earth
14*c
Reducing co2
Iron seeding - adding iron compounds to ocean , encourages small plants to grow and photosynthesise
Capturing co2 from fuel stations and reacting it to form propane and butane
Reduce fossil fuels use
What is biofuel made from
Dead organisms or waste
Production of ethanol
Processing sugar can, wheat or sugar beat
Biodiesel
Vegetable oil , oil seed rape or soya beans
Advantages of biofuel
Renewable carbon neutral can be mixed with petrol
Disadvantages of biofuel
Due to manufacture process (fertiliser) not necessarily carbon neutral space for crops
Alkenes
Double bonds
Unsaturated hydrocarbons
2n
Saturated
Bonded to the maximum number of other atoms
Alkanes
2n+2
Saturated
Alkane or alkene?
Bromine water mixed, begins yellow -red/brown (depending on amount of bromine dissolved)
If mixed with alkane no colour change
If mixed with alkene DECOLOURISES
Cracking
Long chain, less useful alkane
Turned into shorter chain alkane and short chain alkene
Monomer
Repeating unit used to make a polymer
Polymerisation
Monomers join ,saturate to form polymer
Why is It more difficult to recycle plastic than glass
It needs to be sorted before it can be recycled
