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Physical and chemical changes
Lower Sec Science · Secondary 2 · Hard · Physical and chemical changes
Sulfuric acid reacts with calcium carbonate in limestone statues, causing them to wear away. This reaction forms calcium sulfate, water and carbon dioxide. Which type of change is this, and why?
- Chemical change, because new substances are formed
- Physical change, because only the shape of the statue changes
- Physical change, because no new substances are formed
- Chemical change, because the statue just dissolves in water
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