Chemical Aspects of Renewable Energy Sources
Chemistry ⇒ Environmental Chemistry
Chemical Aspects of Renewable Energy Sources starts at 11 and continues till grade 12.
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Describe one chemical limitation of using batteries for large-scale renewable energy storage.
Describe the chemical process of fermentation in the production of bioethanol.
Describe the chemical process that occurs in a lithium-ion battery during discharge.
Describe the role of catalysts in the production of biodiesel from vegetable oils.
Describe the role of enzymes in the production of cellulosic ethanol.
Explain the environmental impact of nitrogen oxides (NOₓ) produced during the combustion of biofuels.
Explain the term 'carbon neutrality' in the context of biofuels.
Explain why the use of renewable energy sources can help reduce acid rain.
Which element is commonly used as a semiconductor in photovoltaic cells? (1) Silicon (2) Iron (3) Copper (4) Sodium
Which gas is primarily produced during anaerobic digestion of organic waste for biogas production? (1) Methane (2) Carbon dioxide (3) Nitrogen (4) Oxygen
Which of the following best describes the process of transesterification? (1) Oxidation of alcohols (2) Conversion of triglycerides and alcohol into esters and glycerol (3) Electrolysis of water (4) Fermentation of sugars
Which of the following is a chemical property that makes hydrogen a challenging fuel to handle? (1) High boiling point (2) High flammability (3) Low reactivity (4) High viscosity
Fill in the blank: The chemical formula for ethanol, a common biofuel, is ___________.
Fill in the blank: The main chemical component of natural gas is ___________.
Fill in the blank: The main chemical element used in the anode of most lithium-ion batteries is ___________.
Fill in the blank: The main chemical reaction in the combustion of methane is CH₄ + 2O₂ → ___________.
True or False: Geothermal energy relies on the radioactive decay of elements within the Earth's crust.
True or False: The chemical composition of biogas is identical to that of natural gas.
True or False: The chemical energy in biomass originates from photosynthesis.
True or False: The combustion of bioethanol produces less net CO₂ than the combustion of fossil fuels.
