Catalysts & Enzymes 0.0 / 5 ? ScienceChemistryGCSEAQA Created by: Bev LambourneCreated on: 20-03-14 12:30 Why can catalysts be used again? THEY ARE NOT USED UP 1 of 10 Why are catalysts used in industry? SPEED UP REACTIONS; REDUCE COSTS 2 of 10 A catalysts provides a reaction pathway with a lower activation energy. Why does this increase the rate of reaction? MORE PARTICLES HAVE ENOUGH ENERGY TO REACT 3 of 10 What are enzymes? BIOLOGICAL CATALYSTS 4 of 10 What happens to enzymes in cold conditions? THEY STOP WORKING AS QUICKLY 5 of 10 What happenes to enzymes in hot conditions? THEY ARE DENATURED 6 of 10 Why does bread have a light texture? DUE TO BUBBLES OF CARBON DIOXIDE BEING PRODUCED DURING FERMENTATION 7 of 10 In brewing what ingredients can provide the glucose (sugar) for fermentation to occur? FRUIT/VEGTABLES/CEREALS 8 of 10 Which enzymes break down proteins? PROTEASES 9 of 10 Which enzymes break down fats? LIPASES 10 of 10
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