Multiple Choice
Which of these scenarios is most likely a chemical reaction?
1. Intro to General Chemistry
Physical & Chemical Changes
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Which of the following best describes the difference between evaporation and transpiration?
A
Evaporation is the process of liquid water turning into vapor, while transpiration is the release of water vapor from plants.
B
Evaporation occurs only in oceans, while transpiration occurs in forests.
C
Evaporation requires sunlight, while transpiration occurs at night.
D
Evaporation is a chemical change, while transpiration is a physical change.
Verified step by step guidance1
Understand the definitions: Evaporation is the process where liquid water turns into vapor, typically from surfaces like oceans, lakes, and rivers. Transpiration is the process where water vapor is released from plants, specifically through small openings in leaves called stomata.
Identify the nature of the processes: Both evaporation and transpiration involve the physical change of water from liquid to vapor. They are not chemical changes because the chemical structure of water (H₂O) remains the same.
Consider the environmental conditions: Evaporation can occur in various environments, not just oceans, and is influenced by factors like temperature, humidity, and wind. Transpiration primarily occurs in plants and is influenced by factors like light, temperature, and humidity.
Evaluate the role of sunlight: While sunlight can accelerate evaporation by providing energy, evaporation can still occur without direct sunlight. Transpiration is generally more active during the day when plants are photosynthesizing, but it can also occur at night to a lesser extent.
Compare the processes: Evaporation is a broader process affecting bodies of water, while transpiration is specific to plants. Both are part of the water cycle, contributing to the movement of water from the Earth's surface to the atmosphere.
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