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Which statement best describes the chemical properties of a compound compared to the elements from which it is composed?
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1. Intro to General Chemistry
Chemical Properties
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When calcium carbonate (CaCO3) decomposes upon heating, what is the solid product formed along with carbon dioxide (CO2)?
A
Ca(OH)2
B
CaCl2
C
CaO
D
CaSO4
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Identify the chemical reaction given: the decomposition of calcium carbonate (CaCO3) upon heating.
Recall that when calcium carbonate decomposes, it breaks down into calcium oxide (CaO) and carbon dioxide (CO2). The reaction can be written as: \(\text{CaCO}_3 (s) \rightarrow \text{CaO} (s) + \text{CO}_2 (g)\).
Understand that calcium oxide (CaO) is a solid product, while carbon dioxide (CO2) is a gas released during the reaction.
Recognize that the other options (Ca(OH)2, CaCl2, CaSO4) are not products of this decomposition reaction; they are different calcium compounds formed under different conditions.
Conclude that the solid product formed along with carbon dioxide when calcium carbonate decomposes is calcium oxide (CaO).
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