Answer the following question given this paragraph: Chemical reactions always involve energy. When methane burns, for example, it releases energy in the form of heat and light. Other chemical reactions absorb energy rather than release it. Q: Chemical reactions always involve energy. when methane burns, for example, it releases energy in the form of what? Choices: - movement and light - light and sound - heat and movement - heat and light A:
heat and light
(Question)
Answer the following question given this paragraph: In general, the process of interest is taking place in the system, and there are no changes in the composition of the surroundings. However, the temperature of the surroundings does generally change. Entropy changes in the surroundings are determined primarily by the flow of heat into or out of the system. In an exothermic process, heat flows into the surroundings, increasing the kinetic energy of the nearby particles. For an exothermic reaction, S surr is positive. Conversely, heat flows from the surroundings into the system during an endothermic process, lowering the kinetic energy available to the surroundings and resulting in a negative value for S surr . Q: In what type of process does heat flow into its surroundings and cause an increase in kinetic energy? Choices: - biochemical process - chemical process - oscillating process - exothermic process A:
(Answer)
exothermic process
Ques: Answer the following question given this paragraph: The last step in a scientific investigation is communicating what you have learned with others. This is a very important step because it allows others to test your hypothesis. If other researchers get the same results as yours, they add support to the hypothesis. However, if they get different results, they may disprove the hypothesis. When scientists share their results, they should describe their methods and point out any possible problems with the investigation. Results can be communicated in various ways. A scientist usually contributes material through publication in a peer-reviewed scientific journal. Peer-review ensures the material is of an acceptable quality for the scientific community. Scientists also write review articles, book chapters, and even whole books. They also regularly participate in scientific meetings, presenting their material in front of large audiences of their peers. Q: What is the last step in a scientific investigation? Choices: - documenting findings - verifying findings - retesting findings - communicating findings A:
Ans: communicating findings
(Q).
Answer the following question given this paragraph: Q: Where does an electron move to after it absorbs energy? Choices: - another electron - atomic orbit - a shell closer to the nucleus - a shell farther from the nucleus A:
(A).
a shell farther from the nucleus
Ques:Answer the following question given this paragraph: Q: After infecting a host, what inactive state do some viruses enter? Choices: - hibernation - immunity - potency - latency A:

Ans:latency
Answer the following question given this paragraph: Cholesterol has been implicated in heart disease for decades. Atherosclerosis is a disorder of the arteries in which cholesterol and other materials are deposited on the interior of the arterial wall. These deposits lead to the formation of plaques that can restrict or even block the flow of blood through these blood vessels (see Figure below ). A decrease in the flow of blood can lead to high blood pressure and a lowered oxygen supply to the heart muscle. A complete blockage of blood flow to parts of the heart (a heart attack) can cause significant damage due to oxygen deprivation, in some cases leading to death. Q: What is the name of the disorder of the arteries in which cholesterol and other materials are deposited on the interior of the arterial wall? Choices: - arthritis - anemia - paralysis - atherosclerosis A:
atherosclerosis