Repulsion - Study guides, Study notes & Summaries

CETa Practice Test Exam Questions With Verified Answers 1. What does the acronym ESD stand for? A. Electrostatic Discharge B. Electrostatic Device C. Electromagnetic Sensitivity Diac D. Electrostatic Damage - answerA. Electrostatic Discharge Current amounts between ______ and _____ can be lethal. A. 100mA, 200mA B. 10mA, 33.3mA C. 33.3, 75.6mA D. 4mA, 10mA - answerA. ©BRAINBARTER 2024/2025 100mA, 200mA What is the number one concern in regards to electrical safety? A. ...

AQA AS Physical Chemistry Exam Questions and Answers Who described atoms as solid spheres that make up different elements and when? - Answer- John Dalton in the 19th century Who suggested that atoms of a particular element had the same mass and atoms of different elements had different masses and when? - Answer- John Dalton in 1803 Who discovered the electron and when? - Answer- JJ Thomson, 1897 discovered electrons proving atoms weren't indivisible or solid. New model named plum puddin...

AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified What is the equation linking mass moles and MR? Mass=moles * MR What is the definition of Ar (relative atomic mass)? The average mass of an atom of an element compared to the mass of one twelfth of carbon 12. What does Mr stand for? Relative molecular mass Define relative isotopic mass. The mass of an isotope of an element compared to the mass of one twelfth of the mass of carbon 12 ...

UCI Bio 93 Midterm 2 Questions and Answers 100% Pass What is a metabolic pathway? A pathway that a molecule goes through, resulting in a specific product. What is metabolism? The totality of an organisms chemical reactions Gibbs free energy Portion of a system that can perform work when temp and pressure are uniform throughout the system. What does a negative Delta G mean? A process that is spontaneous/exergonic What does spontaneous mean? Means that a process will occur. ...

2023 AQA A-level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical Chemistry Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Monday 12 June 2023 Morning Time allowed: 2 hours Materials For this paper you must have: • the Periodic Table/Data Booklet, provided as an insert (enclosed) • a ruler with millimetre measurements • a scientific calculator, which you are expected to use where appropriate. Instructions • Use black ink or black ball-point pen. • Fill in the boxe...

2 ways phosphate addition/removal causes conformational changes - Answer 1)Phosphorylation has a lot of negative charges that interfere with interactions between substrates --> forces protein into different conformations 2) phosphorylation of an enzyme can also alter substrate-binding affinity via electrostatic repulsion what happens to the GPCR and g-protein when a hormone reaches the GPCR receptor on cell membrane? - Answer hormone triggers a conformational change in receptor, which s...

CHEM 219 Module 2 Problem Set Principles of Organic Chemistry with Lab Gallaher Portage Learning. Score for this quiz: 10 out of 10 Submitted Jul 31 at 5:44pm This attempt took 110 minutes. Question 1 Not yet graded / 0 pts Your Answer: Define hydrocarbon. A hydrocarbon is a fully saturated chain of carbons and hydrogens Answer: Molecules composed only of the elements carbon and hydrogen. Question 2 Not yet graded / 0 pts Your Answer: What are the two major classes of hydrocarbon co...

Chemistry AQA AS EXAM 2024 QUESTIONS WITH 100% CORRECT ANSWERS Mass number - ANSWERS Total number of protons and neutrons. Atomic number - ANSWERS Numbers of protons in the nucleus and number of electrons in shells. Negative Ions - ANSWERS More electrons than protons. Positive ions - ANSWERS More protons than electrons. Relative isotopic mass - ANSWERS mass of an atom of an isotope of an element on a scale where an atom of carbon12 is 12. Relative atomic mass - ANSWERS average mass o...

Intermolecular forces (IMFs) correct answer: the forces of attraction between molecules of covalent compounds (weak) Intramolecular forces correct answer: forces within molecules. Forces caused by the attraction and repulsion of charged particles (strong) Dispersion forces correct answer: present in all molecules attractions between molecules caused by the electron motion on one molecule affecting the electron motion on the other through electrical forces; these are the weakest inter...

Chemistry AQA AS EXAM 2024 QUESTIONS WITH 100% CORRECT ANSWERS Mass number - ANSWERS Total number of protons and neutrons. Atomic number - ANSWERS Numbers of protons in the nucleus and number of electrons in shells. Negative Ions - ANSWERS More electrons than protons. Positive ions - ANSWERS More protons than electrons. Relative isotopic mass - ANSWERS mass of an atom of an isotope of an element on a scale where an atom of carbon12 is 12. Relative atomic mass - ANSWERS average mass o...