1] When solid B was heated strongly it gave off water and a solid residue.When water was added to the solid residue the original solid B was formed. a) What name is given to the process described? b)Give one example of solid B.
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a) The process described is known as dehydration.
b) One example of solid B could be copper sulfate pentahydrate (CuSO4ยท5H2O).
a) The process described is called decomposition.
b) An example of solid B could be calcium carbonate (CaCO3). When heated, it decomposes to give off water (H2O) and forms solid residue (CaO), which when water is added to it, regenerates the original solid B (CaCO3).
a) The process described is called decomposition. Decomposition is a chemical reaction where a compound breaks down into simpler substances.
b) One example of solid B that fits the description is sodium carbonate (Na2CO3). When sodium carbonate is heated strongly, it decomposes to give off water (H2O) and a solid residue, which is sodium oxide (Na2O). When water is added to the solid residue (sodium oxide), the original solid B (sodium carbonate) is formed again through a process called hydration.