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CEM 141 Chapter 1 Learning Objectives Questions with well explained answers

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Identify and explain the similarities and differences between atoms, molecules, elements, and compounds - Atoms: the smallest unit of ordinary matter that forms a chemical element Molecules: electrically neutral group of two or more atoms held together by chemical bonds. Elements: consists only o...

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chem 141 exam 2 MSU Questions with 100% Correct Answers | Verified

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Describe the relationship between the frequency, wavelength, and velocity (speed) of a wave. - AnswerThe more times the wave is passing through a point in space = a higher frequency, the higher frequency creates a smaller wavelength, which is why the smallest wave is a gamma wave, it has the highes...

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CEM 141 Exam 3 Questions & Answers Solved 100% Correct!!

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

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

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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 MSU Exam 3 Questions & Answers Solved 100% Correct!!

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Ionization Energy - Answer-energy required to remove an electron from an atom in the gas phase Left Side Electrons - Answer-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 el...

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CEM 141 Final Exam Questions & Answers Solved 100% Correct!!

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Why are alpha particles deflected by the nucleus? - Answer-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 ...

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CEM 141 MSU Exam 2 Questions with 100% Correct Answers | Verified

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Lights acts as what? - Answer-Particle and wave. Wavelength - Answer-The distance (m) of waves from peak to peak. Short: x-ray (red), long: infrared (blue) Short - higher energy Long - lower energy Frequency (V) - Answer-The number of wavefronts per second. Highest: x-ray Velocity of Light - A...

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CEM 141 MSU Exam 2 Questions And Answers Rated A+ New Update Assured Satisfaction

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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 - - Answer-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 energ...

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CEM 141 MSU Final Exam Questions With Complete Solutions!!

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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 ex...

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CEM 141 MSU Exam 1 Solved Questions Correctly Answered!!

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The statement "If I add cold milk to hot coffee the temperature will decrease," is a? - Answer-Claim, always include an explanation and reasoning to the claim. Scientific Model - Answer-Models are used to make testable predictions How much is a picometer? - Answer-0.1 x 10^-12 meters Atomic Fo...

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