(Solved): 2. This diagram shows five water molecules cohesively drawn together. The arrows represent one type ...

2. This diagram shows five water molecules cohesively drawn together. The arrows represent one type of bond and the dotted lines represent another. Please identify each type making sure it is clear what type of bond the arrow is and what type of bond the dotted line is. (Obj 3, 1pt) 3. A. According to the $\mathrm{pH}$ scale (look at versions in the lecture materials, or just Google the term if you need to), which of the following pH values would be associated with a weak base? Obj 6 (0.5pts) A. $\mathrm{pH}$ of 2 B. $\mathrm{pH}$ of 6 65. $\mathrm{pH}$ of 7 0. $\mathrm{pH}$ of 8 E. $\mathrm{pH}$ of 12 B. True or False: If the statement is true, place a $\mathrm{T}$ in the blank. If it is false, correct the statement to make it true. Obj 6 (0.5pts) A substance with a $\mathrm{pH}$ of 9 is 20 times more acidic than a substance with a pH of 11 . 4. Consider the diagram of magnesum chloride (a salu below. The arrows indicate that electrons from the valence (outer) shell of magnesiam have been transferred to each chlorine atom. Obj 2 (1pt) Magnesium has lost two electrons. What is its charge now? Each chlorine has gained an electron. What is the charge of each now? Because of the difference in charges (opposites attract), the atoms will be electrically attracted to each other. This type of bonding is referred to as: 5. Read "water moderates temperature" found in section 2.2 of your text. Using that information, explain why the EVAPORATION of sweat is so effective at cooling the body. Makesure to describe how the heat of vaporization of water as well as hydrogen bonding come inte play. Obj 7 (1pt) 6. A. What type of reaction occurs when a large, complex molecule is broken down into smaller components, such as when protein you eat is digested in the stomach? Obj $5(0.5pts)$ B. What type of reaction occurs when molecular building blocks are put together to synthesize (build) larger, more complex molecules? Obj 5 (0.5pts) 7. Complete the concept map on the following page using the terms provided in the word bank. Obj 4 (4pts) If you have a question about any of the lecture material or would like some more information on a particular topic, please indicate that below, or on the blank page at the end of the assignment.