Core Science

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  • Created by: Eloise
  • Created on: 03-03-16 18:15
What does Auxin do to the shoots and roots of a plant?
Shoots: Grow towards light, Grow away from gravity Roots: Grow towards gravity, Grow towards moisture
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State three links between Cannabis and hard drug use
Stepping stone (Creates desire) Gateway (people in contact with dealers) Genetics (some people more likely to do drugs)
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What economical impacts does smoking and alcohol have?
NHS, Crimes and Economy (lost working days)
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What living and non living factors affect environmental change?
L: Infectious disease, Predators, Prey, Food sources, Competitors NL: \temperature, Rainfall, Air/Water pollution
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Name two living indictors of water pollution
Mayfly Larvae (clean water) Sludgeworm (dirty water)
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Name two organic methods of extracting metal from rocks
Bioleaching (bacteria get energy from bond between copper and sulfur, leachate formed) Phytomining (plants grown in copper rich soil then leaves burnt)
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State the pros and cons for each of the three alternate fuels
Ethanol P: Carbon neutral C: Increase food prices Biodiesel P: Engine doesn't need converting C:Expensive Hydroen P: Forms water C:special expensive engine needed
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When cracked what does diesel from?
Petrol, Paraffin and Ethene for plastics
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What type of reaction is cracking? Whats the method?
Thermal decomposition. Vapourise hydrocarbon then pass over a powdered catalyst at 400 to 700 degrees
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What is polymerisation?
Joining of lots of small alkene molecules (monomers) to form large long chain molecules (polymers) using pressure and a catalyst
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What's an unsaturated oil? How do you hydrogenate it?
Has a double bond. React it with hydrogen and a catalyst at 60 degrees.
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What is partially hydrogenated fats? Name the benefits
Hydrogenating most of the bonds, so it's spreadable. Cheaper than butter and long shelf life.
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If two objects have the same temperature and surface area but different volumes which would cool faster and why?
The one with a smaller volume as it has a higher proportion of the object will be in contact with its surroundings
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Suggest how standard of living is affected by access to electricity
Refrigerators (keep food fresh) Public health (x-rays) Communications (staying touch, receiving news)
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Other cards in this set

Card 2

Front

State three links between Cannabis and hard drug use

Back

Stepping stone (Creates desire) Gateway (people in contact with dealers) Genetics (some people more likely to do drugs)

Card 3

Front

What economical impacts does smoking and alcohol have?

Back

Preview of the front of card 3

Card 4

Front

What living and non living factors affect environmental change?

Back

Preview of the front of card 4

Card 5

Front

Name two living indictors of water pollution

Back

Preview of the front of card 5
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