Exothermic and Endothermic Reactions Quiz

What is an exothermic reaction?

• A reaction that only occurs in living organisms

• A reaction that absorbs energy from the surroundings

• A reaction that neither absorbs nor releases energy

• A reaction that releases energy to the surroundings

What is an endothermic reaction?

• A reaction that only occurs in living organisms

• A reaction that neither absorbs nor releases energy

• A reaction that releases energy to the surroundings

• A reaction that absorbs energy from the surroundings

Which of the following is an example of an exothermic reaction?

• Thermal decomposition

• Dissolving ammonium chloride in water

• Photosynthesis

• Combustion

Which of the following is an example of an endothermic reaction?

• Mixing sodium hydroxide and hydrochloric acid

• Photosynthesis

• Combustion

• Respiration

What happens to the temperature during an exothermic reaction?

• It decreases

• It fluctuates

• It remains the same

• It increases

What happens to the temperature during an endothermic reaction?

• It fluctuates

• It increases

• It remains the same

• It decreases

Which of the following reactions is exothermic?

• Thermal decomposition of calcium carbonate

• Mixing citric acid and baking soda

• Combustion of methane

• Photosynthesis

Which of the following reactions is endothermic?

• Respiration

• Mixing sodium hydroxide and hydrochloric acid

• Combustion of methane

• Mixing citric acid and baking soda

What is the scientific term for burning?

• Photosynthesis

• Combustion

• Decomposition

• Respiration

What type of reaction occurs in hand warmers?

• Endothermic

• Both endothermic and exothermic

• Exothermic

• Neither endothermic nor exothermic