Using Resources Flashcards
(18 cards)
What are ceramics ?
They are non-metal solids with high melting points that arent made from carbon-based compounds
What can influence the properties of a polymer?
How it’s made and what it’s made from
What are examples of ceramics and what are they used for ?
They include glass and clay ceramics such as porcelain and bricks. They’re insulators of heat and electricity , also are brittle and stiff
What are examples of polymers and what are they used for ?
Can be used for clothing and insulators in electrical items and they are insulators or heat and electricity, also being flexible and easily moulded
What are properties of metals ?
They are malleable, good conductors of heat and electricity, ductile, shiny and stiff
What is corrusion?
Where metals react with substances in their environment and are gradually destroyed
Iron corridors easily mean what ?
Iron rust easily and only happens on the surface of the material when in contact with oxygens and hydrogen
What are the 2 ways to prevent rusting?
1- coat the iron with barrier to wiki out water and oxygen
2-sacrificial method which is placing a more reactive metals such as zinc or magnesium with the iron so they don’t react with the iron but the other material instead
What are natural resources ?
Come from the earth, sea or air without human input
What is portable water ?
It is water that has been teated and is naturally safe for humans to drink
What are ways to produce portable water ?
- rainwater
- sea/ocean
-river/reseviour
-aquifers
Process for what to be treated ?
1-Goes through a mesh to stop large objects
2-goes through sand filtration so it drops to the bottom and filteres out the fresh water
3-then aluminium acid is added small particles are added together to be filtered out
4-then they sterilise the water to remove bacteria
5- then check for the correct ph before it is transported in to homes
Waste water treatment ?
1-screening, removes large bits
2-sedimentation, heavier solids sink to bottom
3-aerobic digestion, air pumped through water to have aerobic bacteria break down
4-anaerobic digestion, beards down organic matter
5-released back into the atmosphere
What is the haber process used for ?
To make ammonia from hydrogen and nitrogen using this reaction:
Nitrogen+hydrogen—>ammonia (+heat)
What are NPK federalisers?
Provide plants with the essential elements to grow
What are the 3 main elements in fertilisers ?
Nitrogen, phosphorus and potassium
Ammonia and nitric acid produce ?
Ammonium nitrate
Extracting a finite resource causes damage to what?
Environment but helps economically and socially
