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What gases does the air contain?
What does oxygen react with most metals to make?
When and how was Earth's atmosphere created?
List the stages of the atmosphere
What did scientists believe to Earth's early atmosphere was made of? What do they now believe?
Examples of pollutants
What are the dangers of CO to humans and animals?
What is the definition of 'good' air quality? What is the definition of 'poor'?
What is the result of burning fuels?
How does CO2 link to climate change?
Poor pollution can cause humans to die from...
What makes acid rain?
What are small amounts of CO2 measured in?
What are other pollutant gases measured in?
Where is air pollution measured at?
What is oxygen needed for in burning?
What contain hydrocarbons? What do they use it for?
What is coal made up of?
The equation for hydrogen burning
Define oxidation
Define reduction
Define combustion
What do atoms or non metals form to make?
What happens when sulphur is burned?
What happens when sulphur dioxide reacts with water?
Acid rain is an indirect or direct pollutant?
What is always formed when fuel is burned?
What happens when there isn't enough oxygen when burning?
What gas do cars make at high temperatures?
Carbon monoxide and carbon particulates are created when what reaction occurs?
Which fuels make less sulphur dioxide when burnt?
Coal, or oil and gas.
How can we get rid of poisonous gases in power stations?
How can we get rid of sulphur dioxide?
What are the two methods of wet scrubbing? How does it work?
Name ways to reduce the use of fossil fuels.
What are biofuels?
What's the definition of sustainable?
What happens in a catalytic converter?
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Define melting point
Define tensile strength
Define compressive strength
Define stiffness
Define hardness
Define density
What does effectiveness and durability of a product rely on?
Define the properties of metals
Define the properties of ceramics.
What are they?
What are polymers?
What is concrete made up of?
What is bronze made up of?
Name some natural materials from living things
Name natural materials from the earth?
What is crude oil made up of?
How are synthetic materials made?
Give reasons why synthetic has replaced some natural materials?
What are the processes of fractional distillation?
What increases as the hydrocarbon chain lengthens?
How is a polymer made?
What makes polyethene?
What does PET make? What are the properties?
How do you alter polymer chains?
Are forces stronger when polymers are further or closer apart?
What happens with a stronger force?
What properties do Low density polyethene have?
What properties do high density polyethenes have?
What are plasticisers do? What do they do?
What do thermoplastics do?
What do thermosetting plastics do?
What happens when crystallinity is increased?
What is the width of a human hair?
What are nanoparticles?
How are nanoparticles created?
What is nanotechnology?
What are buckyballs?
What are silver nanoparticles used for?
What are titanium oxide nanoparticles used for?
What are the risks of nanoparticles?
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