Endothermic vs. Exothermic: Key Concepts and Examples

What type of process absorbs energy?

• Exothermic

• Endothermic

• Isothermic

• Adiabatic

In an exothermic reaction, where does the heat flow?

• Within the system only

• From the surroundings to the system

• From the system to the surroundings

• Heat does not flow

What is the role of the system in an endothermic reaction?

• It releases heat to its surroundings

• It absorbs heat from its surroundings

• It maintains a constant temperature

• It prevents heat transfer

Which of the following is true for an exothermic process?

• The system absorbs heat

• The surroundings cool down

• The system releases heat

• The temperature of the system increases

Which process is an example of an exothermic reaction?

• Condensation of gas into liquid

• Baking pizza bread

• Melting ice cubes

• Photosynthesis

What mnemonic can help remember the direction of heat flow in exothermic and endothermic processes?

• EXO for expansion, ENDO for contraction

• EXO for entering, ENDO for exiting

• EXO for external, ENDO for internal

• EXO for exiting, ENDO for entering

What happens during the condensation process?

• Heat is absorbed from the surroundings

• Heat is released to the surroundings

• Temperature of the system increases

• No heat exchange occurs

How does photosynthesis classify in terms of heat transfer?

• Adiabatic

• Isothermal

• Endothermic

• Exothermic

What is required for ice to melt into water?

• Decrease in system's internal energy

• No change in heat

• Absorption of heat from the surroundings

• Release of heat to the surroundings

What does the process of making pizza bread exemplify?

• Adiabatic process

• Endothermic reaction

• Isothermal reaction

• Exothermic reaction