Identify the following change as physical or chemical change.
Woollen yarn to knitted fibre

Explanation

### Step-by-Step Solution:

1. **Understanding the Materials**: We start with woolen yarn, which is a type of textile made from wool fibers. The process involves transforming this yarn into knitted fiber.

2. **Identifying the Process**: The change described is the act of knitting the woolen yarn. This process involves interlocking the yarn to create a fabric or knitted fiber.

3. **Defining Physical vs. Chemical Change**:
- A **physical change** is a change that does not alter the chemical composition of a substance. In a physical change, no new substances are formed, and the original material can often be recovered.
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