True False Acid rain damaging a marble statue is a physical change. When ice cream melts, a chemical change occurs. Breaking up concrete is a physical change. Combining hydrogen and oxygen to make water is a physical change. Changing the size and shapes of pieces of wood would be a chemical change. Burning wood is a physical change. Sand being washed out to sea from the beach is a chemical change. Evaporation is a physical change. In a physical change, the makeup of matter is changed.

1 answer

Let's evaluate each statement one by one:

  1. Acid rain damaging a marble statue is a physical change. - False. While the physical surface of the statue may be altered (like erosion), the acid rain can cause a chemical reaction that changes the composition of the marble (calcium carbonate) into a soluble compound.

  2. When ice cream melts, a chemical change occurs. - False. Melting ice cream is a physical change; the composition of the ice cream remains the same (it's still ice cream).

  3. Breaking up concrete is a physical change. - True. Breaking concrete changes its form and size but does not change its chemical composition.

  4. Combining hydrogen and oxygen to make water is a physical change. - False. This is a chemical change, as the hydrogen and oxygen react to form a new substance, water.

  5. Changing the size and shapes of pieces of wood would be a chemical change. - False. This is a physical change; the wood remains wood regardless of its size or shape.

  6. Burning wood is a physical change. - False. Burning wood is a chemical change because it transforms the wood into ash, smoke, gases, and other substances.

  7. Sand being washed out to sea from the beach is a chemical change. - False. This is a physical change; the sand's composition does not change when it is moved.

  8. Evaporation is a physical change. - True. Evaporation changes the state of matter (from liquid to gas) but does not change the chemical composition of the liquid.

  9. In a physical change, the makeup of matter is changed. - False. In a physical change, the makeup of the matter (its chemical composition) remains the same; only the form or appearance changes.

In summary:

  1. False
  2. False
  3. True
  4. False
  5. False
  6. False
  7. False
  8. True
  9. False