Questions: 1. Define the following term: chemical energy.
A) The capacity to do work.
B) The energy associated with the random motion of atoms and molecules.
C) The energy stored within the structural units of chemical substances.
D) The energy, which comes from the sun.
Transcript text: 1. Define the following term: chemical energy.
A) The capacity to do work.
B) The energy associated with the random motion of atoms and molecules.
C) The energy stored within the structural units of chemical substances.
D) The energy, which comes from the sun.
Solution
Solution Steps
Step 1: Understanding the Definition of Chemical Energy
Chemical energy is a form of potential energy stored within the structural units of chemical substances. It is released or absorbed during a chemical reaction, typically in the form of heat. This energy is associated with the bonds between atoms in a molecule.
Step 2: Analyzing the Options
Option A: Describes the general concept of energy as the capacity to do work, which is not specific to chemical energy.
Option B: Refers to thermal energy, which is related to the random motion of atoms and molecules.
Option C: Accurately describes chemical energy as the energy stored within the structural units of chemical substances.
Option D: Refers to solar energy, which is energy from the sun.
Final Answer
The correct definition of chemical energy is:
\(\boxed{\text{C) The energy stored within the structural units of chemical substances.}}\)