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

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...

CEM 141 MSU Exam 2 Questions and Answers Already Passed Lights acts as what? Particle and wave. Wavelength The distance (m) of waves from peak to peak. Short: x-ray (red), long: infrared (blue) Short - higher energy Long - lower energy Frequency (V) The number of wavefronts per second. Highest: x-ray Velocity of Light C = 3.00 X 10^8 = wavelength X frequency Amplitude The intensity, height of peaks of waves. Highest: blue light Energy of Wave (J) Increases as frequency i...

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...

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 - Answer-C = 3.00 X 10^8 = wavelength X frequency Amplitude - Answer-The intensity, height of peaks of waves. Highest: blue light Energy of Wave (J) - Answer-Increases as frequency increases and as wa...

CEM 141 MSU Exam 3 Latest Update Graded A+ 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 in...

CEM 141 MSU Exam 1 Questions & Answers 2024/2025 The statement "If I add cold milk to hot coffee the temperature will decrease," is a? - ANSWERSClaim, always include an explanation and reasoning to the claim. Scientific Model - ANSWERSModels are used to make testable predictions How much is a picometer? - ANSWERS0.1 x 10^-12 meters Atomic Force Microscopy/ Scanning Tunneling Microscopy - ANSWERSMicroscopes that now allows us to view atoms. Leaves are green in the summer becaus...

CEM 141 MSU Exam 1 Quizzes & Ans!!

CEM 141 MSU Exam 1 Questions With 100% Correct Answers.

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 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 protons and core electrons are not changed. However, when t...