Cem 141 msu exam 1 - Study guides, Class notes & Summaries

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 Force Microscopy/ Scanning Tunneling Microscopy - Answer-Microscopes that now allows us to view atoms. Leaves are green in the summer because? - Answer-A plant's leaves are green in the summer becaus...

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 green in the summer because they contain chlorophyll. Chloro...

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 ...

CEM 141 MSU Exam 3 UPDATED Exam Questions and CORRECT Answers T/F: Covalent bonds are present only when atomic orbitals interact constructively. - Correct ANSWER- True. Binding in Diamond - Correct ANSWER- Each carbon forms 4 bonds to 4 identical carbons; tetrahedral; sp3 Valence Bond Theory - Correct ANSWER- The idea that covalent bonds are formed when orbitals of different atoms overlap. T/F: Electrons are localized in molecular orbital. - Correct ANSWER- False

CEM 141 MSU Exam 3 PASSED Exam Questions and CORRECT Answers Ionization Energy - Correct ANSWER- energy required to remove an electron from an atom in the gas phase Left Side Electrons - Correct 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 electron from Li than from Na? - Correct ANSWER- MORE Why? Because as we move down a group, the orbitals become la...

Ionization Energy Ans: energy required to remove an electron from an atom in the gas phase Left Side Electrons Ans: 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? Ans: 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 ...

CEM 141 MSU EXAM 1 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024

CEM 141 MSU EXAM 2 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024

CEM 141 MSU Exam Questions And Answers

CEM 141 MSU EXAM 3 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024