From the list, given below, select the correct answers for
[Isobars, Isotopes, Efflorescence, Hygroscopy, Charles's law, Boyle's law, Kelvin, Thermal dissociation, Thermal decomposition].
A phenomenon where a compound absorbs moisture from the atmosphere when it is exposed to it but not enough to form a solution.

Explanation

To solve the question, we need to identify the correct term from the provided list that describes the phenomenon where a compound absorbs moisture from the atmosphere without forming a solution.

### Step-by-Step Solution:

1. **Understanding the Definition**:
- The question describes a phenomenon where a compound absorbs moisture from the atmosphere but does not dissolve in it to form a solution. This means that the compound can take in water vapor from the air.

2. **Analyzing the Options**:
...