Reactions involving oxidations and reduction are known as ____ reactions because they always occur simultaneously.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question:** The question asks for the term that describes reactions involving oxidation and reduction that occur simultaneously.

2. **Identifying Key Terms:** The key terms in the question are "oxidation" and "reduction." These two processes are often linked together in chemical reactions.

3. **Defining Oxidation and Reduction:**
- **Oxidation:** This is the process where a substance loses electrons or gains oxygen. In simple terms, it is often associated with the addition of oxygen to a substance.
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