Addictional Applied Science

GCSE Science

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Useful Microorganisms

Intensive Farming

  • Pestisides - Stop pests and weeds.
  • Animals in confined spaces - eg. Battery Hens.
  • Using fertillisers to boost growth of crops.

Organic Farming

  • Natural fertilliesers - eg. Manure.
  • Free range animals.
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Food Poisoning

  • Food poisoning occurs when a food has become contaminated with a disease causing bateria to grow.
  • Good hygiene - STOPS food poisoning.

Bacteria needs 5 things to grow

  • Warmth
  • Moisture --------------> Main 3 Things
  • Food Source
  • (Suitable atmosphere)
  • (Suitable Ph)
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Food Groups

  • Carbohydrates -- Sugar -- Starch ---> Energy.
  • Protein ---> Growth & Reapair.
  • Fat ---> Energy & Storage of Energy.
  • Vitamins --- > Different Body Processes.
  • Minerals ---> Different Body Processes.
  • Fibre ---> Add Bulk To Food
  • ---> Pass Through Your Gut.
  • Water ---> Keeps You Hydrated
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Food Groups

What Foods?

  • Carbohydrates -- Sugar ---> Chocolate, Sweets.
  • -- Starch ---> Pasta, Bread.
  • Protein ---> Meat, Fish, Eggs.
  • Fat ---> Butter, Chocolate.
  • Vitamins ---> Fruit -- Vitamin C.
  • Minerals ---> e.g -- Iron -- Spinach.
  • Fibre ---> Wholegrain e.g -- Brown Rice.
  • ---> Nuts.
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Compounds & Chromatography

<----------- Postive and Negative Compounds Attract.

Find them by Chemial Tests OR Flame Test.

Compounds.

  • Have a High Melting Point.
  • Disolve In Water.
  • Made Up Of Charged ION's.

Chromatography.

  • Place a sample on the paper with a pencil line.
  • Place the chromatography paper in the solvent, with the dot above the solvent level.
  • Allow time to soak.
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Flame Test

Sodium ---> Yellow

Cooper ---> Blue/Green

Potassium ---> Lilac

Calcium ---> Brick Red

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Fingerprints

How To Find A Fingerprint.

  • Find the fingerprint of the object.
  • Lightly brush over the fingerprint with carbon powder.
  • Place see-through tape over it, and peel off.
  • Place the tape onto plane paper.

How To Make A Footprint Impression.

  • Make a cardboard cutout so the impression fits within the frame.
  • Add water to the plaster of paris.
  • Pour the Mix onto the impression.
  • Allow it to set.
  • Analyse the impression once soild.
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Comments

Elliott Kaye

This is really helpful but if I wasto give you any criticism then I would include more details about what id actually included in the experiments like flame tests as all you have said is what colour they turn not how they turn that or what you put on the splint or loop to make it turn that colour and that you have to clean it with hydrochloric acid

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