Endothetermic Or Exothermic?

Endothermic or Exothermic? The energy changes lab was an interesting lab in which the class compared two chemical reactions, the solute baking soda and the solvent vinegar, and the solvent baking soda solution with the solute of calcium chloride to see whether the changes were endothermic or exothermic reactions. I concluded that vinegar and baking soda was the endothermic reaction and baking soda solution and calcium chloride was the exothermic reaction. I knew this because in the vinegar and baking soda, the temperature went from 20 degrees celsius to 17 degrees celsius, and in an endothermic reaction, the solution should lose heat, because when the bonds are formed it uses a great amount of energy, but emits very little, bringing the temperature down. The baking soda solution and calcium chloride was an exothermic reaction because I know that exothermic reactions emit heat because it takes a small amount of energy to break the bond, and it emits a large amount of energy, causing the solution to become warmer .In this solution, the temperature started at 20 degrees celsius, went very quickly to 24 degrees celsius, and slowly decreased back to 21 degrees celsius, which aligns with the expectations …show more content…
Overall, this lab aided me greatly in understanding the difference between exothermic and endothermic changes, and it connects to many lessons with chemical change in the beginning of the year, and comparing chemical change and chemical reactions is very interesting, and I look forward to learning more