Define chemical potential and matric potential.

Explanation

### Step-by-Step Solution:

1. **Define Chemical Potential**:
- Chemical potential refers to the energy associated with one mole of a substance in a system at constant temperature and pressure. It is a measure of the potential energy that can be released during a chemical reaction or phase change.

2. **Define Matric Potential**:
- Matric potential is the potential energy of water in soil or other materials due to the binding of water molecules to those materials. It arises from the interaction between water and solid surfaces, such as soil particles, cellulose, or proteins. Matric potential reflects the energy required to remove water from these materials.

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