Problem: A solid white substance A is heated strongly in the absence of air. It decomposes to form a new white substance B and a gas C. The gas has exactly the same properties as the product obtained when carbon is burned in an excess of oxygen.Based on these observations, can we determine whether solid A is an element or a compound?

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A → B + C


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A solid white substance A is heated strongly in the absence of air. It decomposes to form a new white substance B and a gas C. The gas has exactly the same properties as the product obtained when carbon is burned in an excess of oxygen.

Based on these observations, can we determine whether solid A is an element or a compound?

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Our tutors have indicated that to solve this problem you will need to apply the Classification of Matter concept. You can view video lessons to learn Classification of Matter. Or if you need more Classification of Matter practice, you can also practice Classification of Matter practice problems.