Classify the following into metals, non-metals, metalloids and alloys.
Magnesium, Carbon, Nitrogen, Calcium, Bronze, Chlorine, Tin, Arsenic, Brass, Uranium.

Explanation

To classify the given substances into metals, non-metals, metalloids, and alloys, we will analyze each substance based on their properties and characteristics.

### Step-by-Step Solution:

1. **Identify Magnesium**:
- Magnesium is an alkaline earth metal, which means it is a metal.
- **Classification**: Metal

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