Cem 141 - Study guides, Class notes & Summaries
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CEM 141 MSU Exam 1 Questions and Answers Already Passed
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CEM 141 MSU Exam 1 Questions and 
 
Answers Already Passed 
 
The statement "If I add cold milk to hot coffee the temperature will decrease," is a? Claim, 
always include an explanation and reasoning to the claim. 
 
Scientific Model Models are used to make testable predictions 
 
How much is a picometer? 0.1 x 10^-12 meters 
 
Atomic Force Microscopy/ Scanning Tunneling Microscopy Microscopes that now allows us 
to view atoms. 
 
Leaves are green in the summer because? A plant's leaves are gree...

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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 than from Na? - MORE 
Why? Because as we move down a group, the orbitals become larger and weaker. While going across 
the effective nuclear charge increases. (holds onto the electrons tighter) 
Big ...

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CEM 141 Exam 3 Questions and Answers Already Passed
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CEM 141 Exam 3 Questions and 
Answers Already Passed 
 
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 state from gas --> liquid --> solid ______ energy releases 
 
what happens to the energy from a phase change from gas --> liquid --> s...

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CEM 141 Final Exam Questions and Answers Already Passed
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CEM 141 Final Exam Questions and 
 
Answers Already Passed 
 
If one carbon wants 4 bonds, how many bonding orbitals can it have? 
A. 1 
B. 2 
 
C. 3 
 
D. 4 D 
 
In graphite how many carbons is each carbon attached to? 
A. 2 
B. 3 
 
C. 4 
 
D. 5 B 
 
How many orbitals should "mix" to form 3 bonds? 
A. 2 
B. 3 
 
C. 4 
 
D. 5 B 
 
How many different compounds can you draw from C5H12? 
A. 2 
B. 3 
 
C. 4 
D. 5 
 
E. 6 B 
 
What is the formal charge on H for NH4+? 
A. +1 
B. -1 
C. +2 
 
D. -2 ...

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CEM 141 Cumulative Final | Questions and Answers (Latest Update 2024 / 2025) Expected Questions and Revised Correct Answers, (Complete and Accurate) 100% Guarantee Pass ( A+ GRADED 100% VERIFIED) covering key aspects of the exam
- Exam (elaborations) • 23 pages • 2025
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CEM 141 Cumulative Final | Questions and Answers (Latest Update 2024 / 2025) Expected Questions and Revised Correct Answers, (Complete and Accurate) 100% Guarantee Pass ( A+ GRADED 100% VERIFIED) covering key aspects of the exam

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MSU CEM 141 FINAL EXAM WITH COMPLETE SOLUTIONS
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MSU CEM 141 FINAL EXAM WITH 
 
COMPLETE SOLUTIONS 
 
scientific question can be answered by doing experiments, making observation, taking 
measurements, etc. in a replicable way 
 
Lights acts as what? Particle and wave. 
 
scientific model drawing, graph, diagram, equation. represent many chemical entities. 
 
Wavelength The distance (m) of waves from peak to peak. Short: x-ray (red), long: infrared 
(blue) 
Short - higher energy 
Long - lower energy 
 
scientific theory A well tested concept t...
CEM 141 - chapter 2 exam questions with correct answers with complete A+solution 2024/2025

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CEM 141 - chapter 2 Exam (Latest Update 2024 / 2025) Questions and Answers |100% Verified Correct Answers | complete solution | Grade A+ | Latest update
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AnswersCOM
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CEM 141 - chapter 2 Exam (Latest Update 2024 / 2025) Questions and Answers |100% Verified Correct Answers | complete solution | Grade A+ | Latest update

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CEM 141 PRACTICE EXAM QUESTIONS WITH VERIFIED ANSWERS
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CEM 141 PRACTICE EXAM QUESTIONS 
 
WITH VERIFIED ANSWERS 
 
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. B 
 
Out of Na+, Mg2+, Ne, and F- which has the smallest radius? 
A. Na+ 
 
B. Mg2+ 
C. Ne 
 
D. F- B 
 
When and where were the carbon and oxygen at...

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CEM 141-Exam 1 Latest Update Already Graded A
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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...

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