What is crude oil a mixture of?
How can it be separated into fractions?
What is a the basis of a hydrocarbon?
What sort of bond are they joined by?
Name a type of hydrocarbon:
Small hydrocarbons with only a few atoms have...
Hydrocarbons with between 5 and 12 carbon atoms are...
Large hydrocarbons with many carbon atoms have...
A hydrocarbon only contain hydrogen and carbon atoms
Low boiling points and are gases
A high boiling point and are solids
What is distillation
It works when...
What is distillation commonly used for?
Name the sequence of events in distillation:
It's the process that can be used to separate a pure liquid from a mixture of liquids
The liquids have different boiling points
to separate ethanol from water
heating - evaporating - cooling - condensing
Why do hydrocarbons with small molecules make better fuels?
Name 3 things that a combustion on the fuel may release into the environment:
How is sulfur dioxide produced?
Sulfur dioxide causes...(how)
What does acid rain react with?
How does acid rain damage tree's?
What does acid rain do to lakes?
Where can sulfur be removed from fuels?
Because they are volatile, flow easily and easily ignited
Carbon dioxide, carbon monoxide, water vapour
It's produced when fuels that contain sulfur compounds burn
Acid rain. Because when the sulfur dioxide dissolves in the water droplets in clouds, it makes the rain more acidy than normal.
It reacts with metals and rocks (such as limestone)
It damages the waxy layer on the leaves of the tree's, this then makes it more difficult to absorb the minerals they need for healthy grow
It makes them to acidy so it's to difficult for the fish to survive
What causes global warming?
What could this do to the world?
Carbon dioxide is...
What does the carbon dioxide do?
The more amount of carbon dioxide that is released into the atmosphere...
Give an example of what global warming is doing:
The carbon dioxide released from burning fuels
Change the climate
A greenhouse gas
It absorbs the heat energy ad prevents it escaping the earth's surface into space
The more heat energy that is absorbed, the hotter the earth becomes
The melting of polar ice caps will raise sea levels and this will cause flooding of low land