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is NOT necessarily the result of a chemical reaction. A hard-boiled egg A fire Steam

Ask by Williams Cross. in the United States
Mar 12,2025

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Steam is not necessarily the result of a chemical reaction.

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**Step 1: Analyzing the Options** - **Hard-boiled Egg:** When you hard-boil an egg, the heat causes the proteins in the egg white and yolk to denature and coagulate. This is a chemical change because the structure of the proteins is permanently altered. - **A Fire:** A fire involves combustion, which is a chemical reaction between a fuel and oxygen. The reactants form new substances (such as carbon dioxide, water, and other compounds), making it a chemical process. - **Steam:** Producing steam involves changing water from its liquid phase to its gaseous phase. This is a physical change (a phase transition) and does not involve the rearrangement of atoms into new substances. **Step 2: Conclusion** Since steam is produced by a physical change (evaporation or boiling) rather than a chemical reaction, the option that is **not necessarily the result of a chemical reaction** is: \[ \textbf{Steam} \]

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A hard-boiled egg is the result of cooking, where the heat denatures proteins in the egg, changing their structure but not chemically transforming them into a new substance. It’s more of a physical change where the egg's original composition remains intact—just firm and cooked! Steam, on the other hand, is water in its gaseous state, and its formation is a phase change caused by temperature increase rather than a chemical reaction. So, while it looks different than liquid water, it's still H2O, just in a different form—like how ice becomes water, but without any chemistry happening!

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