Answer the following question given this paragraph: What is this strange-looking object? Can you guess what it is? It's a model of a certain type of matter. Some types of matter are elements, or pure substances that cannot be broken down into simpler substances. Many other types of matter are compounds. The model above represents a compound. The compound it represents is carbon dioxide, a gas you exhale each time you breathe. Q: Which gas do people exhale during each breath? Choices: - carbon monoxide - nitrogen - oxygen - carbon dioxide A:
carbon dioxide
Answer the following question given this paragraph: Note the Pattern Few binary molecular compounds of nitrogen are formed by the direct reaction of the elements. At elevated temperatures, nitrogen reacts with highly electropositive metals to formionic nitrides, such as Li3N and Ca3N2. These compounds consist of ionic lattices formed by M n+ and N3 ions. Just as boron forms interstitial borides and carbon forms interstitial carbides, with less electropositive metals nitrogen forms a range ofinterstitial nitrides, in which nitrogen occupies holes in a close-packed metallic structure. Like the interstitial carbides and borides, these substances are typically very hard, high-melting materials that have metallic luster and conductivity. Nitrogen also reacts with semimetals at very high temperatures to produce covalent nitrides, such as Si3N4 and BN, which are solids with extended covalent network structures similar to those of graphite or diamond. Consequently, they are usually high melting and chemically inert materials. Ammonia (NH3) is one of the few thermodynamically stable binary compounds of nitrogen with a nonmetal. It is not flammable in air, but it burns in an O2 atmosphere: Equation 22.30. Q: What (nh3) is one of the few thermodynamically stable binary compounds of nitrogen with a nonmetal? Choices: - liquid nitrogen - acetic acid - nitrous oxide - ammonia A:
ammonia
Q: Answer the following question given this paragraph: Conditioning is a way of learning that involves a reward or punishment. If you ever trained a dog to obey a command, you probably gave the dog a tasty treat each time he performed the desired behavior. It may not have been very long before the dog would reliably follow the command in order to get the treat. This is an example of conditioning that involves a reward. Q: The way of learning that involves reward and punishment is called? Choices: - foolish - mixed - pressure - conditioning A:
A: conditioning
Question: Answer the following question given this paragraph: Strong acids completely transfer their acidic protons to the solvent when dissolved in water. When a weak acid is dissolved in water, most of the molecules will retain their acidic protons, and only a small percentage will dissociate. Q: When dissolved in water, what do strong acids transfer to the solvent completely? Choices: - acidic neutrons - acidic electrons - acidic proteins - acidic protons A:
Answer: acidic protons
*Question*
Answer the following question given this paragraph: The goal of technology is to solve people's problems. Therefore, the problems of society generally set the direction that technology takes. Technology, in turn, affects society. It may make people's lives easier or healthier. Two examples are described in Figure below . Q: What generally sets the direction that technology takes? Choices: - local animals - local weather - random chance - problems of society A:
**Answer**
problems of society
(Question)
Answer the following question given this paragraph: Polychaetes live on the ocean floor. They may be sedentary filter feeders, active predators, or scavengers. Active species crawl along the ocean floor in search of food. Q: Where do polychaetes live? Choices: - the tundra - great plains - lakes - ocean floor A:
(Answer)
ocean floor