Answer the following question given this paragraph: The Role of Energy in Chemical Reactions Chemical reactions require a sufficient amount of energy to cause the matter to collide with enough precision and force that old chemical bonds can be broken and new ones formed. In general, kinetic energy is the form of energy powering any type of matter in motion. Imagine you are building a brick wall. The energy it takes to lift and place one brick atop another is kinetic energythe energy matter possesses because of its motion. Once the wall is in place, it stores potential energy. Potential energy is the energy of position, or the energy matter possesses because of the positioning or structure of its components. If the brick wall collapses, the stored potential energy is released as kinetic energy as the bricks fall. In the human body, potential energy is stored in the bonds between atoms and molecules. Chemical energy is the form of potential energy in which energy is stored in chemical bonds. When those bonds are formed, chemical energy is invested, and when they break, chemical energy is released. Notice that chemical energy, like all energy, is neither created nor destroyed; rather, it is converted from one form to another. When you eat an energy bar before heading out the door for a hike, the honey, nuts, and other foods the bar contains are broken down and rearranged by your body into molecules that your muscle cells convert to kinetic energy. Chemical reactions that release more energy than they absorb are characterized as exergonic. The catabolism of the foods in your energy bar is an example. Some of the chemical energy stored in the bar is absorbed into molecules your body uses. Q: In general, kinetic energy is the form of energy powering any type of matter in motion, while the energy of position is called what? Choices: - mechanical energy - magnetic energy - thermal energy - potential energy A:
potential energy
Answer the following question given this paragraph: Q: What impact does photosynthesis have on the direction of electron flow? Choices: - repeats it - cycles it - cools it - reverses it A:
reverses it
Q: Answer the following question given this paragraph: An experiment is a controlled scientific study of specific variables. A variable is a factor that can take on different values. Q: What is a controlled scientific study of specific variables called? Choices: - practicum - example - variation - experiment A:
A: experiment
Question: Answer the following question given this paragraph: Scientific investigations generally follow a process called the scientific method. Steps of the scientific method include making observations, asking a question, forming a hypothesis, testing the hypothesis, drawing a conclusion, and communicating the results. Q: What are made in the first step of the scientific method? Choices: - patterns - hypothesis - conclusions - observations A:
Answer: observations
*Question*
Answer the following question given this paragraph: boundary between air masses that is stalled in one place. Q: Opportunistic diseases are usually the direct cause of death of people with what disease? Choices: - heart - parkinson - liver - aids A:
**Answer**
aids
(Question)
Answer the following question given this paragraph: You could argue that oxygen is one of the most important, if not THE most important molecule necessary for life. However, oxygen is essentially just a waste product of the light reactions of photosynthesis. It is a "leftover" from a necessary part of the process. All the oxygen that is necessary to maintain most forms of life just happens to be released from the plant during this process. Q: Oxygen is essentially just a waste product of the light reactions of what? Choices: - Fibrinolysis - electrolysis - glycolysis - photosynthesis A:
(Answer)
photosynthesis