Question
How would you identify whether a change is physical or chemical during an experiment?
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Answer
→ To distinguish between physical and chemical changes during an experiment, focus on the composition of the substance before and after the change.
→ If the substance remains the same chemically, only altering its appearance or state (like melting ice), it's a physical change. However, if a new substance with different properties is formed (such as burning wood and creating ash), it indicates a chemical change has occurred. Observing signs like gas production, color change, or heat release can also confirm a chemical change.
→ If the substance remains the same chemically, only altering its appearance or state (like melting ice), it's a physical change. However, if a new substance with different properties is formed (such as burning wood and creating ash), it indicates a chemical change has occurred. Observing signs like gas production, color change, or heat release can also confirm a chemical change.
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