CHEM 120 (CHEM122)

These notes come straight from the lecture! They contain all of the key concepts of the chapter!

These notes come straight from the lecture! They contain all of the key concepts of the chapter!

These notes come straight from the lecture! They contain all of the key concepts of the chapter!

These are notes taken straight from the lecture. These are all of the main concepts of the chapter!

This is a note guide for the R chapter of Chem 122. This is taken straight from the lecture notes and put into note form!

1. Question : (TCO 1) You have been growing the same variety of corn for over 5 years. In the past two years, you have noticed that the yield has decreased by 10% each year. You grow corn on 10 acres of land and your yield should be 1,000 bushels per acre. Growing conditions have been consistent for the past 5 years. You want to identify another variety of corn that will produce 1,000 bushels per acre. You currently grow Variety ZQB. You want to test two new varieties, CAQ and TWX. You h...

2. Which of the following elements a) is a main group element: Mn, Ag, Co, F, La ______________ b) exists as a diatomic molecule: He, N, Al, P, Hg ______________ c) is a transition element: B, S, Cr, Ne, Sr _____________ d) is a noble gas: H, Be, F, Ar, Au ___________ e) is a metalloid: O, C, Ti, Ge, Cl ___________ f) most likely to gain an electron when forming an ion Na, Mg, Al, Br, He ______________ 3. Indicate the charges of the following ions: a) an ion formed from Ba: ______ b)...

2. A) Only two isotopes of rubidium occur naturally, 85 Rb (atomic mass= 84.9118 amu; abundance 72.15%) and 87 Ru (atomic mass= 86.9092 amu; abundance 27.85%) Calculate the atomic weight (average atomic mass) of rubidium. b) Predict whether each of the following compounds is molecular or ionic: SCL2 CuBr C2H6 Ag2SO4 3. Name the compound or give the formula as appropriate: a) P4S6 b) iodine pentafluoride c) sodium phosphate d) Fe2(CO3)3 4. From the following list of elements­ Ar, H, ...

CHEM 120 TEST 3 STUDY GUIDE ANSWER KEY: Ch 7 & 8 1.Draw the best Lewis Dot Structure for each of the following species. a) BeF2 b) BCl3 c) CCl4 d) PBr5 e) SI6 3. Draw the best Lewis Dot Structures for each of the following species. a) BH2 – b) NI3 c) ClF4 + d) SF5 A) B) C) D) E) 4. Predict whether each molecule would be polar or non polar, assuming all the bonds are polar: A) Polar B) Nonpolar C) Nonpolar D) Polar E) Polar

CHEM 120 TEST 3 STUDY GUIDE: Ch 7 & 8 1.Draw the best Lewis Dot Structure for each of the following species. a) BeF2 b) BCl3 c) CCl4 d) PBr5 e) SI6 3. Draw the best Lewis Dot Structures for each of the following species. a) BH2 – b) NI3 c) ClF4 + d) SF5 A) B) C) D) E) 4. Predict whether each molecule would be polar or non polar, assuming all the bonds are polar: A) B) C) D) E)