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BIO NMDCAT Biological Importance of Water
nmdcat.online June 27, 2026

The term “specific heat” of water refers to the amount of heat energy required to

A. Boil one gram of water and convert it completely to vapor
B. Raise the temperature of one gram of water by one degree Celsius
✓
C. Melt one gram of ice at zero degrees Celsius
D. Break all the covalent bonds in one mole of water

📝 Explanation

Specific heat is a measure of thermal inertia. Water's specific heat is defined as 1 calorie per gram per degree Celsius. The high value is due to the energy needed to first disrupt hydrogen bonds before molecular kinetic energy (and thus temperature) can increase.

📖 Additional Information

  • Boil one gram of water and convert it completely to vapor
  • Raise the temperature of one gram of water by one degree Celsius
  • Melt one gram of ice at zero degrees Celsius
  • Break all the covalent bonds in one mole of water

Specific heat is a measure of thermal inertia. Water's specific heat is defined as 1 calorie per gram per degree Celsius. The high value is due to the energy needed to first disrupt hydrogen bonds before molecular kinetic energy (and thus temperature) can increase.

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