Zadanie 8a
(i) State the equation for the formation of glucose by photosynthesis. (ii) Outline two advantages of using biobutanol rather than petrol (gasoline) as a fuel for vehicles.
Biofuels and renewable energy
Distinguish renewable from non-renewable energy sources, describe how biofuels store carbon fixed recently by photosynthesis (know its reactants and products), and weigh the advantages and disadvantages of biofuels against fossil fuels.
Tę umiejętność sprawdza 8 zadań wzorowanych na arkuszach IB z lat 2023–2025.
Zadania sprawdzające tę umiejętność: 8 Otwórz w wyszukiwarce z filtrami
Zadanie 17
Which statement describes a disadvantage of using bioethanol rather than petrol (gasoline) as a fuel for cars? A. The carbon dioxide released when bioethanol burns was recently removed from the atmosphere by the crop B. Bioethanol releases less energy per…
Zadanie 4c
Explain why a fuel produced from recently grown plants (a biofuel) contributes less to climate change than a fossil fuel.
Zadanie 18
Which energy source is renewable? A. natural gas B. biodiesel made from vegetable oil C. petrol (gasoline) refined from crude oil D. uranium
Zadanie 5a
Glucose is made in the leaves of green plants by photosynthesis. Write the balanced equation for the overall reaction of photosynthesis.
Zadanie 10b
Bioethanol is made from the sugars that plants produce by photosynthesis. Write the balanced summary equation for photosynthesis, in which glucose is formed.
Zadanie 12b
Petrol (gasoline) is a mixture of hydrocarbons and can be blended with bioethanol. The carbon footprint of a fuel can be expressed as the mass of carbon dioxide, in kg, produced per kg of fuel burned. State a reason why replacing part of the petrol with…
Zadanie 11a
(i) Write the balanced equation for photosynthesis, in which glucose is formed. (ii) Explain how the large-scale planting of fast-growing trees is intended to reduce the rate of global warming.