The reaction in which a substance or substances undergo change to produce new substances with new properties is called

Options

A. A biochemical reaction
B. A nuclear reaction
C. A physical reaction
D. A chemical reaction

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term that describes a process where substances change to form new substances with different properties.

2. **Identifying Key Concepts**:
- A reaction involves substances undergoing change.
- New substances are formed.
- These new substances have new properties.

3. **Defining the Term**: The process that fits this description is known as a **chemical reaction**.

4. **Explanation of Chemical Reactions**:
- In a chemical reaction, the original substances (reactants) undergo a transformation to create new substances (products).
- The properties of the products are often different from those of the reactants.

5. **Eliminating Incorrect Options**:
- Biochemical reactions involve biological processes but still fall under chemical reactions.
- Nuclear reactions involve changes in the nucleus of atoms and are not what the question describes.
- Physical reactions involve changes in physical properties but do not result in the formation of new substances.

6. **Conclusion**: Therefore, the correct answer to the question is that the reaction in which a substance or substances undergo change to produce new substances with new properties is called a **chemical reaction**.

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