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Which of the following is an example of a physical change? (2019)

Practice Questions

Q1
Which of the following is an example of a physical change? (2019)
  1. Burning wood
  2. Dissolving sugar in water
  3. Rusting iron
  4. Cooking an egg

Questions & Step-by-Step Solutions

Which of the following is an example of a physical change? (2019)
  • Step 1: Understand what a physical change is. A physical change is when a substance changes its form but not its chemical composition.
  • Step 2: Identify the example given: dissolving sugar in water.
  • Step 3: Recognize that when sugar dissolves, it mixes with water but does not change into a different substance.
  • Step 4: Consider if the change can be reversed. You can get the sugar back by evaporating the water, which shows it is a physical change.
  • Step 5: Conclude that dissolving sugar in water is indeed a physical change.
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