What Are 3 Examples of Chemical Changes? Explained with Common Everyday Processes

Discover 3 clear examples of chemical changes including burning wood, rusting iron, and digesting food, with explanations of each process.

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Burning wood: This process converts wood into ash, heat, and light, showcasing a transformation in chemical composition. Rusting of iron: Exposed to moisture and oxygen, iron forms rust (iron oxide), indicating a new substance formation. Digesting food: Enzymatic reactions in the body break down food into nutrients, altering its chemical structure for energy and growth.

FAQs & Answers

  1. What defines a chemical change? A chemical change is a process where substances undergo a transformation that alters their chemical composition, resulting in the formation of new substances.
  2. Is burning wood a chemical change or physical change? Burning wood is a chemical change because it produces new substances, such as ash, heat, and light, indicating a change in chemical composition.
  3. How does rusting iron qualify as a chemical change? Rusting iron is a chemical change because iron reacts with oxygen and moisture to form iron oxide, a new substance with different properties.
  4. Why is digesting food considered a chemical change? Digesting food is a chemical change because enzymes break down complex food molecules into simpler nutrients, altering their chemical structure to release energy.

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