Question

1. energy is ________________________ when food molecules are broken down.
2. what is the most common unit for energy? ____________________
3. define entropy:

____________________________________________________________

1. spontaneous reactions that release energy are called ____________________
2. non - spontaneous reactions that require an input of energy are called __________________.

Explanation:

• For question 8: When food molecules are broken down, energy is released. This is a fundamental concept in biological and chemical processes related to metabolism.
• For question 9: The most common unit for energy is the joule (J). In the metric system, it is widely used to quantify energy in various scientific fields.
• For question 10: Entropy is a measure of the disorder or randomness in a system. It is an important concept in thermodynamics.
• For question 11: Spontaneous reactions that release energy are called exergonic reactions. These reactions occur without the need for an external energy input and release free energy.
• For question 12: Non - spontaneous reactions that require an input of energy are called endergonic reactions. These reactions do not occur spontaneously and need energy to proceed.

Answer:

1. released
2. joule (J)
3. a measure of the disorder or randomness in a system
4. exergonic reactions
5. endergonic reactions