Exothermic and Endothermic Reactions

The video tutorial explains the concepts of exothermic and endothermic reactions, highlighting how exothermic reactions release heat while endothermic reactions absorb it. It discusses the role of activation energy in initiating reactions and provides examples of both types of reactions, such as photosynthesis for endothermic and respiration for exothermic. The tutorial also includes chemical equations to illustrate these processes and concludes with a promotion for a learning app.

What is the term for a reaction that releases heat?

• Neutral reaction

• Catalytic reaction

• Exothermic reaction

• Endothermic reaction

Which of the following is an example of an exothermic reaction occurring in the human body?

• Photosynthesis

• Digestion

• Evaporation

• Fermentation

What is the energy called that is required to start a chemical reaction?

• Thermal energy

• Kinetic energy

• Potential energy

• Activation energy

Which process is an example of an endothermic reaction?

• Rusting

• Combustion

• Photosynthesis

• Respiration

In the photosynthesis equation, what are the reactants?

• Carbon dioxide and water

• Glucose and carbon dioxide

• Oxygen and water

• Glucose and oxygen

What happens to the energy level of products in an exothermic reaction compared to reactants?

• It decreases

• It increases

• It fluctuates

• It remains the same

Which of the following is a chemical equation for respiration?

• CO2 + H2O + energy → C6H12O6 + O2

• CH4 + O2 → CO2 + H2O

• C6H12O6 + O2 → CO2 + H2O + energy

• N2 + O2 → NO2

Which of the following is NOT an example of an exothermic reaction?

• Burning of a candle

• Decomposition of vegetable matter

• Photosynthesis

• Explosion

What type of reaction is an explosion considered to be?

• Endothermic

• Exothermic

• Neutral

• Catalytic