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 challenge associated with the large-scale storage of hydrogen fuel.
Describe the chemical reaction that occurs during the electrolysis of water to produce hydrogen.
Describe the environmental impact of using fossil fuels compared to renewable energy sources.
Describe the role of photosynthesis in the carbon cycle and its relevance to renewable energy.
Explain the environmental advantage of using biogas over natural gas.
Explain the term 'carbon neutral' in the context of biofuels.
Explain why hydrogen is considered a clean fuel.
Explain why solar cells are considered environmentally friendly from a chemical perspective.
Which chemical element is most commonly used as the semiconductor in solar photovoltaic cells? (1) Silicon (2) Carbon (3) Iron (4) Sodium
Which of the following best describes the role of a catalyst in biodiesel production? (1) Increases the rate of transesterification (2) Decreases the energy content of biodiesel (3) Increases the viscosity of biodiesel (4) Reduces the amount of glycerol produced
Which of the following is a byproduct of the fermentation process used to produce bioethanol? (1) Methane (2) Carbon dioxide (3) Ammonia (4) Nitrogen
Which of the following is a chemical property of bioethanol that makes it suitable as a fuel? (1) High viscosity (2) High energy density (3) Low boiling point (4) High oxygen content
Fill in the blank: The chemical formula for ethanol, a common biofuel, is __________.
Fill in the blank: The main chemical component of biogas is __________.
Fill in the blank: The main chemical reaction in a hydrogen fuel cell is the combination of hydrogen and __________ to form water.
Fill in the blank: The main greenhouse gas emitted from the combustion of fossil fuels is __________.
True or False: Geothermal energy relies on the radioactive decay of elements within the Earth's crust.
True or False: Solar thermal energy systems use chemical reactions to generate electricity.
True or False: The combustion of bioethanol produces less carbon dioxide than the combustion of fossil fuels.
True or False: The energy released from wind turbines is a result of a chemical reaction.
