Answer the following question given this paragraph: Polyamides Just as the reaction of a diol and a diacid forms a polyester (Section 15.8 "Preparation of Esters"), the reaction of a diacid and a diamine yields a polyamide. The two difunctional monomers often employed are adipic acid and 1,6-hexanediamine. The monomers condense by splitting out water to form a new product, which is still difunctional and thus can react further to yield a polyamide polymer. Q: Just as the reaction of a diol and a diacid forms a polyester, the reaction of a diacid and a diamine yields this? Choices: - phenol - polyethylene - acetone - polyamide A:
polyamide
(Question)
Answer the following question given this paragraph: Iron filings are attracted by a magnet. This is a physical property of iron but not of most other materials, including sand. How could you use this difference in physical properties to separate a mixture of iron filings and sand?. Q: Attraction of a material by a magnet is an example of what type of property? Choices: - thermal - chemical - transitive - physical A:
(Answer)
physical
Ques: Answer the following question given this paragraph: Deposit feeders, which are organisms that feed on small pieces of organic matter, usually in the top layer of soil. Sea cucumbers are deposit feeders, living on the ocean floor. They eat the tiny scrap particles that are usually abundant in the environments that they inhabit. Q: What are are organisms that feed on small pieces of organic matter? Choices: - bottom feeders - difference feeders - waste feeders - deposit feeders A:
Ans: deposit feeders
(Q).
Answer the following question given this paragraph: The noble gases are characterized by their high ionization energies and low electron affinities. Q: Electromagnetic specturm is the full spectrum of raidant energy, which is energy emitted and transmitted as what? Choices: - currents - flows - tides - waves A:
(A).
waves
Ques:Answer the following question given this paragraph: Continental glaciers form in a central location with ice moving outward in all directions. Alpine glaciers form in high mountains and travel through valleys. Ice caps cover large areas. Q: Which type of glaciers form in high mountains and travel through valleys? Choices: - rocky glaciers - altitude glaciers - seaside glaciers - alpine glaciers A:

Ans:alpine glaciers
Answer the following question given this paragraph: Many kinds of waves exist, such as sound waves and water waves. Visible light is also a wave. It is a specific type of a more general phenomenon called an electromagnetic wave. All waves can be described in terms of the basic physical properties frequency and wavelength . These two properties are related to the speed of a wave by the following equation:. Q: What type of wave is visible light? Choices: - static - radio - acoustic - electromagnetic A:
electromagnetic