A plant uses the energy from sunlight to create oxygen and glucose from carbon dioxide and water. Which statement is true about the changes that have occurred?
A. A chemical change has occurred because energy was needed.
B. A physical change has occurred because the substances are still gases.
C. A physical change has occurred because the plant looks different.
D. A chemical change has occurred because new compounds have been produced.
Answer (3)
A chemical change has occurred because new compounds have been produced.
A chemical change has occurred because new compounds have been produced.
The correct answer is D: A chemical change has occurred because new compounds have been produced. During photosynthesis, carbon dioxide and water are converted into glucose and oxygen, indicating a transformation of substances. This change is characterized by the formation of new products from the original reactants.
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