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CEM 141 AHIP EXAM PACKAGE DEAL!!

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CEM 141-Exam 1 Questions With Correct Answers Already Passed!!

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Atoms - Matter is made up of Atom - The the smallest distinguishable part of an element Theories - Can change overtime according to the evidence available Electrostatic forces - ALL atoms/molecules attract to one another due to Attractions - ________ lower potential energy of a system Repulsion...

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CEM 141 CHAPTER 1 LEARNING OBJECTIVES QUESTIONS WITH A GUARANTEED A+

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Stable systems form when? - The attractive forces and the repulsive forces are equal. Claim, evidence and reasoning for the existence of negatively charged particles in an atom. - Claim: Electron's are negatively charged particles of an atom. Evidence: JJ's cathode ray. Electron's were ejected...

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CEM 141 MSU Exam 3 Questions With 100% Correct Answers.

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Ionization Energy - energy required to remove an electron from an atom in the gas phase Left Side Electrons - have weaker attractions to remove electrons *easier to remove electrons from the left side of the table than the right side* Does it take MORE or LESS energy to remove an electron from Li...

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CEM 141 - Exam 2 Questions With 100% Correct Answers.

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mole - 6.022 x 10^23 things number of particles that allows us to convert from the molecular to the macroscopic level limiting reactant/reagent - amount of one of the reactants which limits how much product can be formed. smallest amount. percent yield - actual/theoretical x 100 electromagnetic...

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CEM 141 Exam 3 Questions And Answers Already Graded A+

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change of state from solid -> liquid -> gas ________ energy - requires energy needed to phase change from solid --> liquid --> gas comes from: - the surroundings when phases change from solid --> liquid --> gas, interactions are _______ between molecules - overcome change of st...

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CEM 141 PRACTICE EXAM QUESTIONS WITH A GUARANTEED A+

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Which has a larger atomic radius? Mg or Ar? Why? A. Mg, because it is a metal. B. Mg, because its valence electrons are not as strongly attracted towards the nucleus as those in Ar. C. Ar, because it is a heavier element. D. Ar, because it has more electrons and they repel each other. - Answer B...

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CEM 141 Final Questions and Answers(A+ Solution guide)

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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 c...

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CEM 141 MSU Exam 2 Questions With Correct Answers Already Passed!!

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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 becau...

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CEM 141 Final Exam Questions And Answers Already Graded A+

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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 propert...

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CEM 141 MSU Final Exam All Possible Questions and Answers with complete solution

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Yes because it can be tested and answered though observations and experiments - 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 ...

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