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Which of the following represents a physical change?

Practice Questions

Q1
Which of the following represents a physical change?
  1. Burning wood
  2. Dissolving sugar in water
  3. Rusting of iron
  4. Cooking an egg

Questions & Step-by-Step Solutions

Which of the following represents a physical change?
  • Step 1: Understand what a physical change is. A physical change is when a substance changes its form or appearance but not its chemical composition.
  • Step 2: Identify the example given: dissolving sugar in water.
  • Step 3: Analyze the process of dissolving sugar. When sugar dissolves, it mixes with water but does not change into a different substance.
  • Step 4: Conclude that since the sugar remains sugar and only its state changes (from solid to dissolved), this is a physical change.
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