Fill in the blanks in the following statements:
Changes in which only ______ properties of a substance change are called physical changes.

Explanation

To fill in the blanks in the statement, we need to understand the definition of physical changes. Here's the step-by-step solution:

**Step 1:** Identify the type of properties involved in physical changes.
Physical changes involve changes that do not alter the chemical composition of a substance. Instead, they only affect the physical properties.

**Step 2:** Define physical properties.
Physical properties include characteristics such as shape, size, color, state (solid, liquid, gas), and texture.

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