Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

7. Energy, Rate and Equilibrium

Endothermic & Exothermic Reactions

GOB Chemistry

7. Energy, Rate and Equilibrium

Endothermic & Exothermic Reactions

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2:08 minutes

Problem 69c

Textbook Question

Classify each of the following as exothermic or endothermic:
c. The metabolism of glucose in the body provides energy.

Verified step by step guidance

Understand the definitions of exothermic and endothermic processes: Exothermic processes release energy (usually in the form of heat) to the surroundings, while endothermic processes absorb energy from the surroundings.

Identify the type of reaction described in the problem. The metabolism of glucose in the body involves breaking down glucose (C₆H₁₂O₆) through a series of chemical reactions to produce energy.

Recall that the energy released during glucose metabolism is used by the body for various functions, such as maintaining body temperature, muscle movement, and other cellular activities.

Recognize that the release of energy during glucose metabolism indicates that the process is exothermic, as energy is being transferred from the chemical bonds of glucose to the surroundings.

Classify the process as exothermic based on the observation that energy is released during the metabolism of glucose in the body.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Exothermic Reactions

Exothermic reactions are chemical processes that release energy, usually in the form of heat, to their surroundings. This occurs when the total energy of the products is lower than that of the reactants, resulting in a net release of energy. A common example is combustion, where fuels react with oxygen to produce heat and light.

Endothermic Reactions

Endothermic reactions absorb energy from their surroundings, leading to a decrease in temperature in the immediate environment. In these reactions, the energy of the products is higher than that of the reactants, requiring an input of energy to proceed. Photosynthesis in plants is a classic example, as it absorbs sunlight to convert carbon dioxide and water into glucose.

Metabolism of Glucose

The metabolism of glucose is a series of biochemical reactions that convert glucose into energy, primarily through cellular respiration. This process is exothermic, as it releases energy stored in glucose molecules, which is then used by cells for various functions. The overall reaction can be summarized as glucose reacting with oxygen to produce carbon dioxide, water, and energy.