Ques: Answer the following question given this paragraph: Effect of Temperature on the Solubility of Gases The solubility of gases in liquids decreases with increasing temperature, as shown inFigure 13.10 "Solubilities of Several Common Gases in Water as a Function of Temperature at Partial Pressure of 1 atm". Attractive intermolecular interactions in the gas phase are essentially zero for most substances. When a gas dissolves, it does so because its molecules interact with solvent molecules. Because heat is released when these new attractive interactions form, dissolving most gases in liquids is an exothermic. Q: How does the solubility of gases in liquids change with increasing temperature? Choices: - it increases - it stabilizes - no change - it decreases A:
Ans: it decreases

Ques: Answer the following question given this paragraph: Polymers are a pervasive part of modern life. It is very likely that at least some part of your clothing is made of nylon, rayon, or polyester. The milk or juice that you have for breakfast often comes in a polyethylene container. If you don't have breakfast at home, you might get coffee from a fast food establishment, where your order is delivered to you in a Styrofoam®️ container. While getting out of your car, you bang the door on another vehicle. One reason you may not have dented the door is the fact that it could be made out of a polymeric plastic material that resists deformation more than simple metallic structures. Elsewhere on your car, both synthetic and natural rubber are probably present in the tires. All these materials are examples of organic polymers. Q: Synthetic and natural rubber, styrofoam and plastic are examples of organic what? Choices: - solutions - microbes - metals - polymers A:
Ans: polymers

Ques: Answer the following question given this paragraph: 4.4 Newton's Third Law of Motion: Symmetry in Forces There is a passage in the musical Man of la Mancha that relates to Newton's third law of motion. Sancho, in describing a fight with his wife to Don Quixote, says, "Of course I hit her back, Your Grace, but she's a lot harder than me and you know what they say, 'Whether the stone hits the pitcher or the pitcher hits the stone, it's going to be bad for the pitcher. '" This is exactly what happens whenever one body exerts a force on anotherthe first also experiences a force (equal in magnitude and opposite in direction). Numerous common experiences, such as stubbing a toe or throwing a ball, confirm this. It is precisely stated in Newton's third law of motion. Newton's Third Law of Motion Whenever one body exerts a force on a second body, the first body experiences a force that is equal in magnitude and opposite in direction to the force that it exerts. This law represents a certain symmetry in nature: Forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself. We sometimes refer to this law loosely as "action-reaction," where the force exerted is the action and the force experienced as a consequence is the reaction. Newton's third law has practical uses in analyzing the origin of forces and understanding which forces are external to a system. We can readily see Newton's third law at work by taking a look at how people move about. Consider a swimmer pushing off from the side of a pool, as illustrated in Figure 4.9. She pushes against the pool wall with her feet and accelerates in the direction opposite to that of her push. The wall has exerted an equal and opposite force back on the swimmer. You might think that two equal and opposite forces would cancel, but they do not because they act on different systems. In this case, there are two systems that we could investigate: the swimmer or the wall. If we select the swimmer to be the system of interest, as in the figure, then F wall on feet is an external force... Q: Newton's third law of motion describes what property of forces that means balance? Choices: - acceleration - magnetism - gravity - symmetry A:
Ans: symmetry

Ques: Answer the following question given this paragraph: Leaves are rich in chloroplasts that function as solar collectors and food factories. The first leaves were very small, but leaves became larger over time. Q: What are in leaves that function as solar collectors and food factories? Choices: - cellulose - vacuoles - fibroblasts - chloroplasts A:
Ans:
chloroplasts