Classify the following as pure substances or mixtures. Separate the pure substances into elements, compounds and divide the mixtures into homogeneous and heterogeneous :
Tap water

Explanation

To classify tap water as either a pure substance or a mixture, and further categorize it, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Nature of Tap Water**:
- Tap water is commonly used in households and is known to contain various dissolved substances such as minerals, salts, and possibly other impurities.

2. **Determine if Tap Water is a Pure Substance or a Mixture**:
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