Give an everyday example of a physical change.

Give an everyday example of a physical change.

• A. Chopping wood into pieces.
• B. Burning wood to ashes.
• C. Wood rotting over time.
• D. Wood changing color due to oxidation.

Answer: (A)

A physical change happens when a material changes size, shape, or state without forming a new substance. Chopping wood into pieces fits this perfectly: you’re just cutting it into smaller parts, so the wood’s identity remains the same. The chemical makeup hasn’t changed, just the arrangement and amount of material. In contrast, burning wood turns it into ash and gases, which are new substances with different properties. Wood rotting involves organisms breaking it down into new chemicals, and color changes from oxidation involve chemical reactions that create new compounds. So the everyday example of chopping wood shows a physical change because no new substance is produced.

A physical change happens when a material changes size, shape, or state without forming a new substance. Chopping wood into pieces fits this perfectly: you’re just cutting it into smaller parts, so the wood’s identity remains the same. The chemical makeup hasn’t changed, just the arrangement and amount of material.

In contrast, burning wood turns it into ash and gases, which are new substances with different properties. Wood rotting involves organisms breaking it down into new chemicals, and color changes from oxidation involve chemical reactions that create new compounds. So the everyday example of chopping wood shows a physical change because no new substance is produced.