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Which of the following best describes a chemical change? Group of answer choicesDry ice becoming carbon dioxide gasBurning fuel in a lampClouds forming from water vaporDissolving table salt in water

Question

Which of the following best describes a chemical change? Group of answer choicesDry ice becoming carbon dioxide gasBurning fuel in a lampClouds forming from water vaporDissolving table salt in water

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Solution

The best description of a chemical change from the given options is "Burning fuel in a lamp".

Here's why:

A chemical change is a process where one or more substances are altered into one or more new and different substances. In other words, a chemical change involves a chemical reaction, with new substances produced as a result of the change.

Let's look at each option:

  1. Dry ice becoming carbon dioxide gas: This is a physical change, not a chemical one. The dry ice (solid carbon dioxide) is simply changing its state from solid to gas. The substance itself (carbon dioxide) doesn't change.

  2. Burning fuel in a lamp: This is a chemical change. When the fuel burns, it reacts with oxygen in the air to produce heat, light, and new substances (like carbon dioxide and water vapor). The original fuel is transformed into new substances.

  3. Clouds forming from water vapor: This is a physical change. The water

This problem has been solved

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