Multiple Choice
In the context of homeostasis, what mechanism prevents ice crystals from forming inside the cells of certain organisms?
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2. Cell Chemistry & Cell Components
Properties of Water- Thermal
Multiple Choice
Choose the correct statement: Liquid water ________.
A
Is less dense than ice.
B
Has a lower specific heat than most other molecules.
C
Has a higher heat of vaporization than most other molecules.
D
Is nonpolar.
Verified step by step guidance1
Understand the concept of density: Ice is less dense than liquid water because the molecular structure of ice forms a lattice that takes up more space, making it less dense.
Review specific heat: Specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius. Water has a high specific heat compared to many other substances, meaning it can absorb a lot of heat without a significant change in temperature.
Examine heat of vaporization: The heat of vaporization is the amount of energy required to convert a liquid into a gas at its boiling point. Water has a high heat of vaporization, which means it requires a lot of energy to change from liquid to gas, more so than many other substances.
Consider polarity: Water is a polar molecule due to its bent shape and the difference in electronegativity between hydrogen and oxygen, leading to a partial positive charge on hydrogen and a partial negative charge on oxygen.
Based on these concepts, identify the correct statement: Liquid water has a higher heat of vaporization than most other molecules, which is a key property that affects its role in climate and biological systems.
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