2013 Level 2 Chemistry MNI
Friday, 7 June 2013
Endothermic vs. Exothermic
Today, we did four simple experiments to see that some reactions absorb heat energy (feel cold) while others release heat energy (feel warm/hot).
NaOH + water = increase in temperature (exothermic)
Ammonium chloride + water = decrease in temperature (endothermic)
HCl + NaOH solutions = increase in temperature
Ammonium thiocyanate + barium hydroxide = decrease in temperature
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