Predict the change in internal energy for an isolated system at constant volume.

Explanation

To predict the change in internal energy for an isolated system at constant volume, we can follow these steps:

### Step 1: Understand the Isolated System
An isolated system is one where there is no exchange of matter with the surroundings and no heat transfer occurs. This means that both heat (q) and work (w) are zero.

### Step 2: Recall the First Law of Thermodynamics
The first law of thermodynamics states that the change in internal energy (ΔU) of a system is equal to the heat added to the system (q) minus the work done by the system (w):
\[ \Delta U = q - w \]
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