Unit 2: Chemical Bonds and Reaction Reviews

Classify each process as ENDOTHERMIC OR EXOTHERMIC.

For the graph shown with reactants at lower enthalpy and products at higher enthalpy, with ΔH indicated upward, identify the reaction type.

For the same graph where products are higher than reactants and ΔH points upward, determine whether energy is released or absorbed.

Which processes from the list on page 1 could the graph with products higher than reactants represent? Select all that apply.

For the graph shown with reactants at higher enthalpy and products at lower enthalpy, with ΔH indicated downward, identify the reaction type.

For the same graph where products are lower than reactants and ΔH points downward, determine whether energy is released or absorbed.

Which processes from the list on page 1 could the graph with products lower than reactants represent? Select all that apply.

Match the arrow to the description.

The forward reaction is best described as an (a)   .

As a result of dissolving a salt in water, a student found that the temperature of the water increased. From this observation alone, the student should conclude that the dissolving of the salt (a)   .