19-2


 * 1) 2(NH 4 ) 2 Cr 2 O 7 (s) ——> 2Cr 2 O 3 (s) + 2N 2 (g) + 8H 2 O(g)
 * 2) the substance changed from the "orange crystalline ammonium dichromate" to the "‘fluffy’ green chromium(III) oxide."
 * 3) exothermic
 * 4) the rest of the energy most likely turned into a gas and floated away
 * 5) on the right becai=use the energy would be inside the reaction
 * 6) negative
 * 7) because the heat is trapped inside while the reaction is occuring and just builds up so instead of giving off heat it is absorbing it from the environment around it
 * 8) no it would still feel warm or hot. when heat is absorbed in concrete you can still burn your feet right?