A student places 5.3 g of a solid substance into a test tube and heats it up. After heating it (and then letting it cool), they

Question

A student places 5.3 g of a solid substance into a test tube and heats it up. After heating it (and then letting it cool), they weigh the substance again. To their surprise, the mass is now 3.6 g. 
In a few sentences, explain to the student which type of reaction this likely was, and also explain how this relates to mass conservation. Explain to the student why they experiences a decrease in mass.

Kunduz · Accepted Answer

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