name a metal carbonate that doesn't decompose when heated with a bunsen burner.
Cadmium carbonate decomposes at over 500K, so it would not decompose in a bunsen burner.
Nevermid that's wrong. Ignore me.
I'm going out on a limb here so take what I write with a grain of salt. I think almost all carbonates decompose when heated but the "trick" part of the question is "with a bunsen burner." From the information I can find, the decomposition temperature increases for the group II carbonates as one goes down the table. That makes BaCO3 the most stable (excluding radium of course). The information I can find shows the decomposition of BaCO3 at 1300 C. I don't think a common bunsen burner will get that hot. Meker burners and Terrell burners will but I usually consider bunsen burners no higher than 1000 degrees and probably that is a top limit.
To determine a metal carbonate that does not decompose when heated with a Bunsen burner, we must consider the properties of different metal carbonates.
Most metal carbonates decompose when heated, releasing carbon dioxide gas and leaving behind the metal oxide as a residue. However, there is an exception to this rule - the metal carbonate that doesn't decompose when heated is lithium carbonate (Li2CO3).
Lithium carbonate withstands the heat from a Bunsen burner flame without decomposing. This property is due to the stability of lithium carbonates compared to other metal carbonates. Lithium carbonate has a high melting point and does not readily break down into carbon dioxide and a metal oxide when exposed to high temperatures.
It's essential to note that even though lithium carbonate doesn't decompose when heated with a Bunsen burner, it can still undergo thermal decomposition at higher temperatures beyond the capabilities of a Bunsen burner.
Remember, when researching such information, scientific references, textbooks, or reputable online sources provide valuable insights to confirm and validate facts.