Which of the following is an example of a physical change? A. Bubbles form when vinegar and baking soda are mixed. B. A piece of steel bends when it is pounded with a hammer. C. A... Which of the following is an example of a physical change? A. Bubbles form when vinegar and baking soda are mixed. B. A piece of steel bends when it is pounded with a hammer. C. A matchstick changes color when it burns. D. A solid forms when two clear liquids are mixed.
Understand the Problem
The question asks to identify which option among the provided choices is an example of a physical change. To solve it, we need to analyze each option to determine if it represents a physical change or a chemical change.
Answer
A piece of steel bends when it is pounded with a hammer.
The final answer is B. A piece of steel bends when it is pounded with a hammer.
Answer for screen readers
The final answer is B. A piece of steel bends when it is pounded with a hammer.
More Information
A physical change involves a change in state, shape, or appearance, but the composition of the material doesn't change. Bending steel changes its shape but not its chemical composition.
Tips
One common mistake is to confuse physical and chemical changes; chemical changes alter the substance's molecular structure, while physical changes do not.
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