You are provided with a mixture containing sand, iron filings, ammonium chloride and sodium chloride. Describe the procedures you would use to separate these constituents from the mixture?

Explanation

To separate the constituents of a mixture containing sand, iron filings, ammonium chloride, and sodium chloride, we can follow these step-by-step procedures:

### Step 1: Separation of Iron Filings
1. **Materials Needed**: A bar magnet and a Petri dish.
2. **Procedure**:
- Place the mixture on a Petri dish.
- Move a bar magnet over the mixture multiple times.
- The iron filings will be attracted to the magnet and can be removed from the mixture.
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