Beth heats a pot of water to cook pasta.
What may happen as a result of adding heat?

It will fall off and tip over. 

The answer is d.potassium

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.