Match the following descriptions to the overall type of reaction. (4 points) Endothermic Exothermic Example: 2,900 kJ/mol - 3,150 kJ/mol = - 250 kJ/mol Mixing ammonium nitrate and water feels cold Example: Photosynthesis Phase change of melting ice to liquid water

Answer 1

Here are the matches for the descriptions to the overall type of reaction:

1. Endothermic - Mixing ammonium nitrate and water feels cold.
   (Endothermic reactions absorb heat from the surroundings.)

2. Exothermic - Example: 2,900 kJ/mol - 3,150 kJ/mol = - 250 kJ/mol.
   (Exothermic reactions release heat energy.)

3. Endothermic - Phase change of melting ice to liquid water.
   (Melting ice absorbs heat from the surroundings, which is characteristic of endothermic processes.)

The correct matches are:

• Mixing ammonium nitrate and water: Endothermic
• Example: 2,900 kJ/mol - 3,150 kJ/mol = - 250 kJ/mol: Exothermic
• Phase change of melting ice to liquid water: Endothermic