Energy in Chemical Reactions

How do the surroundings feel during an exothermic reaction?

• Colder

• No change

• Hotter

• Neutral

What is the net effect of energy in an exothermic reaction?

• Net absorption of energy

• Net release of energy

• No net change in energy

• Net destruction of energy

What is a common result of an exothermic reaction in terms of energy?

• Energy is absorbed and stored.

• Energy is released and surroundings cool down.

• Energy is released and surroundings heat up.

• Energy is converted to light.

In endothermic reactions, energy is absorbed from where?

• The surroundings

• The reaction itself

• The products

• The reactants

Why does an ice pack feel cold?

• It releases heat

• It absorbs heat from the surroundings

• It is made of ice

• It is insulated

What is an exothermic reaction?

• A reaction that absorbs energy from the surroundings in the form of heat.

• A reaction that releases energy from the system in the form of heat.

• A reaction that neither absorbs nor releases energy.

• A reaction that only occurs at low temperatures.

Which of the following is true for an endothermic reaction?

• It releases energy to the surroundings.

• It absorbs energy from the surroundings.

• It only occurs at high temperatures.

• It produces light.

What happens to the temperature of the surroundings during an endothermic reaction?

• It increases

• It decreases

• It remains constant

• It fluctuates

Which of the following is a characteristic of an exothermic process?

• Absorbs heat from the surroundings

• Releases heat to the surroundings

• Requires continuous energy input

• Occurs only in closed systems

In which type of reaction is energy primarily absorbed in the form of heat?

• Exothermic reaction

• Endothermic reaction

• Neutral reaction

• Spontaneous reaction