On a Winter Day the Temperature Drops from -15°C to -25°C

question 54

Multiple Choice

On a winter day the temperature drops from -15°C to -25°C overnight. If a pan sitting outside contains 0.50 kg of ice, how much heat is removed from the ice for this temperature change?

• A) 0.25 kcal
• B) 2.5 kcal
• C) 10 kcal
• D) 1 kcal

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Definitions:

Potential Energy

Potential energy is the energy held by an object because of its position relative to other objects, stress within itself, electric charge, or other factors.

Chemical Reaction

A process in which substances interact, leading to the formation of new substances with different properties.

Molecular Bonds

Molecular bonds are attractive forces that hold atoms together in molecules, including ionic, covalent, and hydrogen bonds among others.

Reactants

are substances initially present in a chemical reaction that are consumed during the reaction to make products.