London dispersion Study guides, Class notes & Summaries

CEM 141 Final Exam Questions and Answers Already Passed 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 properties." False. Atoms of the same element can have different numbers of neutrons. What is the evidence that electrons are subatomic pa...

Inorganic Chemistry 2 Exam Review With 100% Correct Answers 2024 1) Which of the following statements about gases is false? A) All gases are colorless and odorless at room temperature. B) Distances between molecules of gas are very large compared to bond distances within molecules. C) Gases expand spontaneously to fill the container they are placed in. D) Gases are highly compressible. E) Non-reacting gas mixtures are homogeneous. - answerA) All gases are colorless and odorless at room ...

Portage Learning Chem 210 - Module 2 Problem Set What is the shape of water? Bent. The bond angle is 104.5 degrees. What is autoionization, and how is it important for water? Autoionization is the ability of a compound to react with itself to form ions. One water molecule reacts with a second molecule to form two ions: H3O+ and OH-. These ions exist in small amounts in pure water and influence the chemistry of water. Name the three non-covalent forces ...

A saturated hydrocarbon is correct answer: an alkane Which molecule below has the highest boiling point? correct answer: Butanol Which molecule below is least soluble in water? correct answer: butane- one without any functional groups Cis/trans isomer ratios were important in European corn borer moths because correct answer: A, C & D- Specific ratios of cis to trans are used as pheromones by the moths- The ratios help male moths locate female moths for breeding purposes- The ratios ...

CHEM 1035 Final Exam Study Guide 2023 with complete solution- Virginia Tech Weakest forces, exist in all substances, only force in non-polar substances, form temporary dipoles London or Dispersion forces Dispersion forces ____ with increasing molar mass increase Stronger than dispersion forces, only present in polar substances, attraction between oppositely charges ends of polar molecules Dipole-dipole forces Dipole-dipole forces ____ with increasing molar mass increase Very strong di...

Edexcel A Level Chemistry (9CH0) Advanced Organic and Physical Chemistry Paper 02 Marking Scheme June 2022. Pearson Edexcel GCE In Chemistry (9CH0) Paper 02 Advanced Organic and Physical Chemistry. B is not correct because there is no C=C in the repeat unit C is not correct because the extension bonds are not from the correct carbon atoms of the chain and there should not be a C=C in the repeat unit D is not correct because the extension bonds are not from the correct carbon atoms of the cha...

Homogeneous Mixture - A mixture in which the composition is uniform throughout Heterogeneous Mixture - A mixture that is not uniform in composition; components are not evenly distributed throughout the mixture. SI Unit of Length - Meter (m) SI Unit of Mass - Kilogram (kg) SI Unit of Time - Second (s) SI Unit of Temperature - Kelvin (K) SI Unit of Amount - Mole (mol) Meter to Nanometer (nm) conversion factor - 10^-9 (1m = 1,000,000,000 nm) Meter to Micrometer (um) conversion factor - 10^...

Biochem Module 2 Questions and Answers Graded A What is the shape of water? Bent. The bond angle is 104.5 degrees. What is autoionization, and how is it important for water? Autoionization is the ability of a compound to react with itself to form ions. One water molecule reacts with a second molecule to form two ions: H3O+ and OH-. These ions exist in small amounts in pure water and influence the chemistry of water. Name the three non-covalent forces discussed in this module 1. Dipole-dipole f...

Hydrogen Bonds correct answers- Specific type of dipole-dipole interaction - MUST have a H covalently bonded to F O or N Dipole-Dipole correct answers- Attractions between polar molecules - Weaker than covalent bonds - Stronger the dipole moment, the boiling point gets larger Dispersion Forces correct answers- Everything has these - Attractions arise from movement - Short-lived interaction; Very weak - Contribute to ALL intermolecular forces London Forces depend on: polari...

HESI A2 Practice 120 Questions with Verified Answers 1) Which of the following describes the primary function of the respiratory system? A) to create sound and speech B) to take oxygen into the body while removing carbon dioxide C) to transport nutrients to the cells and tissue of the body D) to act as a barrier between the body's organs and outside influences - CORRECT ANSWERS to take oxygen into the body while removing carbon dioxide 2) Which of the following is the first s...