Endothermic Reaction Chemistry Example 5

Follow the full solution, then compare it with the other examples linked below.

Example 5

easy
An instant cold pack becomes cold when activated. Is the process inside the pack exothermic or endothermic? Explain.

Solution

  1. 1
    The pack feels cold because the process is taking in heat from your hand and the surroundings.
  2. 2
    A process that absorbs energy from the surroundings is endothermic.

Answer

Endothermic.
Endothermic reactions absorb energy from the surroundings. Because energy is pulled in rather than released, the surroundings become cooler.

About Endothermic Reaction

A chemical reaction that absorbs energy (usually as heat) from the surroundings, resulting in a decrease in surrounding temperature and a positive enthalpy change (ฮ”H>0\Delta H > 0).

Learn more about Endothermic Reaction โ†’

More Endothermic Reaction Examples

Example 1 easy

Photosynthesis absorbs energy: [formula]. Why is this endothermic?

Example 2 medium

An instant cold pack contains ammonium nitrate and water. When the inner bag is broken, the temperat

Example 3 medium

Photosynthesis absorbs 2803 kJ per mole of glucose. Is it endothermic or exothermic? What is the sig

Example 4 easy

Cooking an egg requires continuous heat input. Is this an endothermic or exothermic process?

โ† All Endothermic Reaction Examples Endothermic Reaction Concept