No, marble will not burn under normal circumstances because it is a non-combustible, inorganic material. Here's why:
1. Chemical Composition
Marble is primarily calcium carbonate (CaCO₃), a stable mineral compound.
Unlike organic materials (e.g., wood, plastic), marble lacks carbon-hydrogen bonds needed for combustion.
2. What Happens When Heated?
At ~900°C (1652°F), marble undergoes thermal decomposition (not burning):
CaCO₃→CaO (quicklime)+CO₂↑
This process is called calcination-it breaks down chemically but doesn't produce flames.
3. Fire Resistance
Marble is fireproof and won't ignite, even in a house fire.
However, extreme heat can cause cracking, discoloration, or loss of polish due to thermal stress.
Comparison to Wood
Wood: Burns at ~300°C (572°F) because it contains cellulose and lignin (organic fuels).
Marble: Doesn't burn but can degrade chemically at very high temperatures.
Practical Example
If you hold a flame to marble, it might blacken from soot but won't catch fire. In a kiln, it turns to lime (CaO) instead of ash.
