chemistry question. endothermic or exothermic?

[AngelaP]

i mixed vermiculite, iron powder, salt, and water together and it got warm. would this be a endo or exo thermic reaction?
yes i had to shake it and rub it in a bag

 

[Mauri]

You always look at the system's point of view. If you feel that it got warm then that means the system released energy but the environment absorbed energy. So which one? The system's point of view, it is exothermic.

 

[I'll See Myself Out]

Exothermic; since in this case energy, in the form of heat) is going to be a product

Vermiculite + Fe2 + H2O + NaCl ----------> products + energy (Heat)

 

[Mister Awesome]

exo thermic

If it gives off more energy than was needed, it is exe

 

[dum)dum]

exothermic, because the reaction release energy (heat).

 

[scottsdalehigh64]

It might be an exothermic reaction because the mixture increased in temperature. However, there is one problem. By mixing the components you added kinetic energy to the system, and this energy also increased the temperature.