Ionisation Study guides, Class notes & Summaries

A Level Physical Chemistry AQA questions and answers 100% verified. 1 - ANS.relative mass of a proton 1 - ANS.relative mass of a neutron 1/1840 - ANS.relative mass of an electron +1 - ANS.relative charge of a proton 0 - ANS.relative charge of a neutron -1 - ANS.Relative charge of an electron strong nuclear force - ANS.How is the nucleus held together nuclear force - ANS.is the nuclear force or electrostatic force stronge...

EDEXCEL A LEVEL CHEMISTRY QUESTION PAPER 1 JUNE 2023 . Centre Number Candidate Number *P71912A0128* Turn over Total Marks Candidate surname Other names Please check the examination details below before entering your candidate information Paper reference   P71912A ©2023 Pearson Education Ltd. N:1/1/1/1/1/1/1/ Instructions • Use black ink or ball‑point pen. • If pencil is used for diagrams/sketches/graphs it must be dark (HB or B). • Fill in the boxes at the top of...

How is the wavelength of a photon related to its energy, frequency and wavenumber? correct answer: Energy - As the wavelength is shorter, there is more energy and vice versa Frequency - The frequency of photon increase, causing the wavelength to go down and vice versa Wavenumber - Is reciprocal to the wave length (1/a) Why are energy levels descrete correct answer: Because each energy level has its own energy pathway. How to calculate the wavelengths of light from one energy level to ...

A mini assessment task to anaylse Fanon's view of decolonisation from a small exerp

Module 3 Model Questions And Answers State one benefit of adding chlorine to water (1) - Answer-Kills germs Suggest one possible hazard of adding chlorine to drinking water (1) - Answer-It is toxic Explain the decrease in the atomic radii across the period from Na to Cl (3) - Answer-1) nuclear charge increases 2) electron shielding remains the same 3) greater attraction to nucleus Describe and explain the trend, down the group, in the reactivity of the Group 2 elements with water (5) -...

ICH correct answersstandardize technical guidelines and requirements for drug marketing registrations, so applications for marketing to various regulatory agencies around the world can occur without redundant testing - the international standard for design, conduct, monitoring, and reporting of clinical research on investigational drugs streamlines process for developing and marketing drugs internationally Legally Authorized Representative (LAR) correct answersindividual or judicial bod...

AQA AS CHEMISTRY Paper 1 Inorganic and Physical Chemistry Tuesday 16 May 2023 Morning Time allowed: 1 hour 30 minutes Materials For this paper you must have: • the Periodic Table/Data Sheet, 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 boxes at the top of this page. • Answer all questions. ...

AS CHEMISTRY Paper 1 Inorganic and Physical Chemistry Time allowed: 1 hour 30 minutes Materials For this paper you must have: • the Periodic Table/Data Sheet, 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 boxes at the top of this page. • Answer all questions. • You must answer the questions in the ...

What is meant by work function (2) - Minimum energy required by an electron to escape from (1) a metal surface (1) What is meant by ionisation energy? (2) - Minimum energy required to remove an electron from an atom (1) from the ground state (1) Why do emitted electrons have a kinetic energy that varies up to a maximum value? (4) - Energy of a photon is fixed/constant (1) Energy is required for electrons to overcome work function ø (1) Electrons deeper into/below the surface of the meta...

A LEVEL CHEMISTRY WITH VERIFIED QUESTIONS AND ANSWERS Weak acid - an acid that is only slightly ionised/dissociated in aqueous solution Oxidation - loss of electrons Reduction - gain of electrons Ionic bonding - The electrostatic attraction between oppositely charged ions Covalent bonds - sharing of a pair of electrons Electronegativity - the ability of an atom to attract the electrons in a covalent bond Relative atomic mass - The weighted mean mass of an atom of an element ...