Energy Review OL 2025

What is potential energy?

• The energy stored in an object due to its position or arrangement.

• The energy of an object in motion.

• The energy released during a chemical reaction.

• The energy associated with the temperature of an object.

What type of reaction releases energy in the form of heat?

• Endothermic reaction

• Exothermic reaction

• Catalytic reaction

• Reversible reaction

What type of energy is stored in an object due to its position or condition?

• Kinetic energy

• Thermal energy

• Potential energy

• Chemical energy

What is the concept of energy conservation in physics?

• Energy conservation refers to the principle that the total energy in a closed system remains constant.

• Energy conservation means that energy can be created and destroyed in a closed system.

• Energy conservation is the process of converting energy from one form to another without loss.

• Energy conservation refers to the idea that energy can be transferred but not transformed.

What is the formula for calculating kinetic energy?

• KE = mv

• KE = 1/2 mv²

• KE = mgh

• KE = 1/2 mv

What is an endothermic reaction?

• A reaction that releases energy into its surroundings.

• A reaction that absorbs energy from its surroundings.

• A reaction that occurs at a constant temperature.

• A reaction that produces heat.

What is the Law of Conservation of Energy?

• Energy can be created and destroyed.

• Energy is transformed from one form to another but can be created.

• Energy is neither created nor destroyed; it can only be transformed from one form to another.

• Energy can be converted into matter.

What is the relationship between energy and work?

• Work is done when energy is transferred from one system to another.

• Energy is created when work is done.

• Work and energy are unrelated concepts.

• Energy is a measure of the work done by a system.

What does a positive ΔH indicate about a chemical reaction?

• The system is absorbing energy from its surroundings.

• The system is releasing energy to its surroundings.

• The reaction is spontaneous and occurs without energy input.

• The temperature of the system is decreasing.

What is the significance of energy transformation in everyday life?

• It is essential for powering devices, heating homes, and enabling transportation.

• It has no impact on daily activities.

• It only affects industrial processes.

• It is only relevant in scientific research.