Cem 141 - Study guides, Class notes & Summaries

CEM 141 Cumulative Final - Questions with Explanations of Answers Latest Update 2024

CEM 141 FINAL EXAM 2024 QUESTIONS WITH CORRECT ANSWERS!!

CEM 141 UPDATED Exam Questions and CORRECT Answers Is there such a thing as a "scientific method?" - Ans no What do scientists do? - Ans 1. ask questions 2. design experiments 3. gather/analyze data and evidence 4. make claims (based on the data/evidence) 5. develop models, explanations, and theories about how/why the universe behaves as it does

CEM 141 MSU Final Exam Questions and Answers Already Passed Consider the question: Is there an attractive force between a pencil and the earth? Is this a scientific question? [Yes or No] Because III. It can be tested and answered through observations and experiments IV. The answer is already known and we find it online V. There is no way to design an experiment to answer this question. Yes because it can be tested and answered though observations and experiments Which of the fol...

CEM 141 - chapter 2 Questions And Answers Rated A+ New Update Assured Satisfaction

CEM 141 MSU Exam 2 Questions and Answers Already Passed Which reaction requires the most energy? A. N(g) → N+(g) + e - B. N+(g) → N2+(g) + e - C. F(g) → F+(g) + e - D. F+(g) → F2+(g) + e - D. F+(g) → F2+(g) + e - Fluorine has a higher effective nuclear charge than Nitrogen - so it is harder to remove an electron (takes more energy because the electron is more strongly attracted by the nucleus). Effective nuclear charge is the same for F and F+ because the number of pro...

CEM 141 Final Exam Questions and Answers Already Passed Why are alpha particles deflected by the nucleus? Because both the alpha particles and the nucleus are positively charged and so the alpha particle is repelled. Is this statement (Dalton's Theory) true or false and why? "All atoms of an element are identical and have the same mass and properties." False. Atoms of the same element can have different numbers of neutrons. What is the evidence that electrons are subatomic pa...

CEM 141-Exam 1 Latest Update Already Graded A Matter is made up of Atoms The the smallest distinguishable part of an element Atom Can change overtime according to the evidence available Theories ALL atoms/molecules attract to one another due to Electrostatic forces ________ lower potential energy of a system Attractions _____ raise potential energy of a system Repulsions Stable systems form where The attractive and repulsive forces are EQUAL or the potential energy is at a minimum The ...

cem 141 215 Questions and CORRECT Answers

If one carbon wants 4 bonds, how many bonding orbitals can it have? A. 1 B. 2 C. 3 D. 4 - AnswerD In graphite how many carbons is each carbon attached to? A. 2 B. 3 C. 4 D. 5 - AnswerB How many orbitals should "mix" to form 3 bonds? A. 2 B. 3 C. 4 D. 5 - AnswerB How many different compounds can you draw from C5H12? A. 2 B. 3 C. 4 D. 5 E. 6 - AnswerB What is the formal charge on H for NH4+?A. +1 B. -1 C. +2 D. -2 E. 0 - AnswerE What is the formal charge on O for OH-? ...