As the movement of molecules within a substance decreases, describe the change in heat of the substance. justify your response in two or more complete sentences.

You will start to cool down. Your body is like a machine when things start to move and work it heats up but when it stops it cools down.

I hope this helps, I had the same question and this was my answer (sorry for being 6 days late XD)

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.