Question

what type of energy change is represented by this diagram?

nuclear
kinetic
endothermic
exothermic

Explanation:

Compare reactant and product energy levels

$$ E_{\text{products}} > E_{\text{reactants}} $$

Determine the sign of enthalpy change

$$ \Delta H = E_{\text{products}} - E_{\text{reactants}} > 0 $$

Classify the energy change

$$ \text{Energy absorbed} \implies \text{endothermic} $$

Answer:

• nuclear
• kinetic
• endothermic (Correct answer)
• exothermic