Here's a breakdown:
* Limestone: Composed primarily of calcium carbonate (CaCO3). It forms from the accumulation of marine organisms' shells and skeletons.
* Sandstone: Composed of sand grains (primarily quartz and feldspar) cemented together. It forms from the accumulation and cementation of sand in various environments.
When limestone is heated:
* Calcination: When limestone is heated strongly (around 825-900°C), it undergoes a chemical change called calcination. This process decomposes calcium carbonate into calcium oxide (lime) and carbon dioxide gas.
* Not Sandstone: Heating limestone does not transform it into sandstone. It simply changes its chemical composition.
Therefore, limestone does not become sandstone when heated.
