Answer the following question given this paragraph: Physical changes are changes in the physical properties of matter but not in the makeup of matter. An example of a physical change is glass breaking. Q: Glass breaking is an example of what type of change that doesn't affect the makeup of matter? Choices: - reversible - thermal - chemical - physical A:
physical
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:
exothermic process
Q: Answer the following question given this paragraph: Cells divide repeatedly to produce an embryo. Previously the one-celled zygote (the first cell of a new organism) divided to make two cells (a). Each of the two cells divides to yield four cells (b), then the four cells divide to make eight cells (c), and so on. Through cell division, an entire embryo forms from one initial cell. Q: What do you call the first cell of a new organism? Choices: - embryo - starter cell - egg - zygote A:
A: zygote
Question: Answer the following question given this paragraph: Water pollution occurs when chemicals, sewage, trash, or heat enter water resources. Water pollution is threatening the limited supply of clean, fresh water that human beings and other living things depend on. Q: Water pollution occurs when chemicals, sewage, trash, or heat enter what? Choices: - renewable resources - air resources - natural resources - water resources A:
Answer: water resources
*Question*
Answer the following question given this paragraph: Fungi are a kingdom in the domain Eukarya that includes molds, mushrooms, and yeasts. Q: What kingdom in the domain eukarya that includes molds, mushrooms, and yeasts called? Choices: - bacteria - acids - proteins - fungi A:
**Answer**
fungi
Q: Answer the following question given this paragraph: 2.4 | Inorganic Compounds Essential to Human Functioning By the end of this section, you will be able to: Compare and contrast inorganic and organic compounds Identify the properties of water that make it essential to life Explain the role of salts in body functioning Distinguish between acids and bases, and explain their role in pH Discuss the role of buffers in helping the body maintain pH homeostasis The concepts you have learned so far in this chapter govern all forms of matter, and would work as a foundation for geology as well as biology. This section of the chapter narrows the focus to the chemistry of human life; that is, the compounds important for the body's structure and function. In general, these compounds are either inorganic or organic. An inorganic compound is a substance that does not contain both carbon and hydrogen. A great many inorganic compounds do contain hydrogen atoms, such as water (H2O) and the hydrochloric acid (HCl) produced by your stomach. In contrast, only a handful of inorganic compounds contain carbon atoms. Carbon dioxide (CO2) is one of the few examples. An organic compound, then, is a substance that contains both carbon and hydrogen. Organic compounds are synthesized via covalent bonds within living organisms, including the human body. Recall that carbon and hydrogen are the second and third most abundant elements in your body. You will soon discover how these two elements combine in the foods you eat, in the compounds that make up your body structure, and in the chemicals that fuel your functioning. The following section examines the three groups of inorganic compounds essential to life: water, salts, acids, and bases. Organic compounds are covered later in the chapter. Q: Carbon and what are the second and third most abundant elements in your body? Choices: - helium - mercury - calcium - hydrogen A:
A: hydrogen