Textbook Question
A watt is a measure of power (the rate of energy change) equal to 1 J/s. (a) Calculate the number of joules in a kilowatt-hour.
8. Thermochemistry
Nature of Energy
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What type of energy transformation takes place during photosynthesis?
A
Light energy to chemical energy
B
Chemical energy to thermal energy
C
Mechanical energy to electrical energy
D
Thermal energy to light energy
Verified step by step guidance1
Understand that photosynthesis is a process used by plants to convert light energy into chemical energy stored in glucose.
Recognize that the energy transformation in photosynthesis involves the absorption of light energy by chlorophyll in plant cells.
Identify that the absorbed light energy is used to convert carbon dioxide and water into glucose and oxygen, which is a form of chemical energy.
Note that the primary energy transformation in photosynthesis is from light energy to chemical energy.
Conclude that the correct type of energy transformation during photosynthesis is the conversion of light energy into chemical energy stored in glucose molecules.
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