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Atomic Structure notes

283 notes by 226 users · Page 2 of 8

This Atomic Structure page on GoConqr gathers notes on atoms, the periodic table and electronic configuration. With over 230 notes from more than 180 users, it offers mostly secondary-level material for school students revising atomic structure and teachers choosing revision resources. Pick a note to start exploring.

Chem Notes Reverse sublimation Elements and atomic structure · An element is a pure substance made up of only one type of atom. · An atom is the smallest particle of an element that can exist. · An atom contains the sub-atomic p... madhubla99.5
Untitled QUANTUM NUMBERS AND SHITn is the principal quantum number. It defines the probable distance of an electron from the nucleus. The value of n is an integer, eg 1, 2, 3, 4, etc l is the angular momentum quantum number. I... anniehackland
Atoms and Elements Dalton’s Atomic Theory atoms are tiny particles of matter atoms of an element are similar and different from other elements atoms of two or more different elements combine to form compounds atoms are rearranged to for... devibabyy66
Elements of life - created from Mind Map Atom Moles Spectroscopy Grace Wingrove
Chemistry- atoms and reactions Atoms and reactions relative mass for an electron: 1/1836isotopes are atoms of the same element with different numbers of neutrons and different massesisotopes react in the same way as their elements as they have the ... farzaneh
I.3. Notes Atoms are made up of protons, neutrons and electrons. All elements are made up of atoms. Electrons have -1 charge and they go around the nucleus in orbitals. The nucleus makes up most of the mass of the atom. The diam... donaghy_sinead
Atomic Structure Structure of the atom Protons, neutrons and electrons - neutrons are the heaviest (only by a little) Relative atomic mass: The mean weighted mass of one mole of an element compared to the mass of one twelfth of a mole... Katie Pellow
Chemisty page 21 Name the sub atomic particles found in the nucleus: Protons and neutrons What is the maximum number of electrons that can occupy the first 2 shells: 10 Explain the overall charge of an atom: Protons and electrons are ... Naimah Bowen
Foundations in chemistry 2A: The Atom and Redox Key definitions Definitions: Isotopes: Atoms of the same element with a different neutron number. Atomic number: The number of protons in the nucleus of an atom. Mass number: The sum of the number of protons and ... Lucy Smith
Chapter 4 in Depth janelh.jh
Elements compound and mixtures 4.1: Elements Element: An element is a pure substance that can not be further broken down into two or more substances. Through chemical processSugar can be broken down into elements so i is not an element nor is water... Fatima Zehra
The electronic structure of the atom A Brief History of the AtomPhilosophers from the earliest times have speculated about the nature of fundamental material from which the world is made Each element is composed of extremely small particles called atomsa... Dylan Parsons-Buckingham
Atomic Structure Pauli Exclusion Principle - No two electrons in an atom can be in exactly the same stateThey cannot be in the same place at the same timeNo two electrons in a given atom can have the same four quantum numbers Energy l... sirnapsmorethana
8.3 Chemistry Notes Atomic Structure neutrons neutrons are neutrally charged they make up the nucleus (with protons)   protons protons are positively charged they make up the nucleus (with neutrons)   electrons electrons are ne... Matea Diss
Atomic Structure The mass number is the total amount of Protons and Neutrons in an atom. Isotopes are atoms in an element with different numbers of neutrons. The relative formula mass of a compound is found by adding together the rela... lmg719
Elements INTODUCTION   All matter is composed of atoms and each individual atom is composed of three different sub-atomic particles. protons neutrons electrons The center of an atom is called a nucleus and it's made up of... Sofie 6710
ATOMS & MOLECULES #Antoine L. Lavoisier laid the foundation of chemical sciences by establishing two important laws of chemical combination.#“In a chemical substance the elements are always present in definite proportions by mass”.#Dal... SA Balaji
Scientists & their Experiments Ariana Isaacs
Atoms, molecules, quantum theory and electron configuration Atoms Atomic number- Elements differ from each other by the number of protons they contain in the nucleus. The number of protons is the atomic number of an element. Atomic Mass number- Is the total number of... Shannon Ruscoe
Physical changes, atoms and elements and the Periodic table by CGP Physical changes Physical changes don't change the particles just the arrangement or their energy Changes of state When a solid is heated its particles gain more energy This makes the particles move which weakens the ... Diamonds Forever 17
Principal Energy Levels & Sub-Levels Energy levels / shells numbered 1, 2, 3, 4, etc. - called principal energy levels.Number of principal energy levels matches the period number of the element. First energy level accommodates two electrons - filled firs... Melissa Lamb
Electrons and the Periodic Table The Bohr Model of the Atom Neils Bohr developed a model of the atom to explain the structure of the atom changes when it undergoes transitions the energy of an atoms is quantized; amount of energy in the atom is relat... devibabyy66
thermochemical principles and properties of particles notes - uncomplete Periodic trend: Electronegativity Electronegativity- is the measure of the tendency of an atom to attract a bonding pair of electrons in a covalent bond. Across a period observation- electronegativity increases across... Shannon Ruscoe
Moles Basics:- neutrons have a charge of 0 (they are neutral)- protons have a +1 charge - electrons have a -1 charge- mass of an electron is 1/2000 a.m.u- atoms always have the same number of protons and electrons , so the ... Nicole Engen
Ionisation Energies Ionisation energies provide the best evidence for the existence of electron shells.Ionisation energy is the energy required to remove an electron from an element to form a positive ion. First Ionisation Energy (∆Hᵢₑ):... Melissa Lamb
Notes: Atoms and the Periodic Table Atoms were thought to be tiny spheres that could not be divided up further in early models of the atom. In 1898, electrons were discovered by Thompson and so the representation of the atom was forced to change. An ato... Hannah Berry
Periodic Table and Particles Compounds pure substances their properties are UNIVERSAL they have a definite proportion by mass and cannot be decomposed by ordinary chemical or physical means Terms:molecule: neutral group of atoms that act as a uni... ggabeau17
Science Exam Study Notes Recipe Book of the Universe Life Cycle of a Star  All stars start off as a stellar nebula, however the size of the star determines which path it would follow.  A start the same size as the sun (or Sol) would... Courtney Wong
Elements and the Periodic Table Elements Materials on earth are either compounds or pure substances.   Compounds are mixtures of elements chemically combined.    Elements are substances that cannot be broken down any further.   T... Conor Curley
Chemistry : Topic 1 Atom: building block of matter   Dalton: Cannon Ball    3-D / Spherical Solid / Hard Uniform Indivisible same are the same  different is different Infinite amount of Matter J.J. Thompson: Cath... Nicole Rourke
Topic 1a - Atoms, Elements, Compounds and Mixtures Nishan Ranasinghe
Chapter 7 Cheat Sheet waves- A vibrating disturbance by which energy is transmitted wavelength (λ)- distance b/n two points frequency (ν)- # of waves that pass through a pt amplitutde- vertical distance of a wave measured in Hz Formulas Sp... Grogu Mando
Ionisation Energy 1st ionisation energy: The energy required to remove 1 electron from each atom in 1 mole of gaseous atoms to form 1 moles of gaseous 1+ ions 2nd ionisation energy: The energy required to remove 1 electron from each at... Maisie Brown
Chemistry: The Atom Atomic theory    John Dalton developed the first atomic theory  atoms are  1. Very small  2. Have indivisible parts cannot be broken  3. Atoms of the same element have the same mass and c... Bene Tee
Atomic Structure - created from Mind Map PEN Proton Electron Neutron Mass number = proton + neutrons In atom P=E Isotope Charge = +1 Relative mass = 1 Charge = -1 Relative mass = 0 No charge Relative mass = 1 Different number of neutrons Chemical properties ... keirancorbett
Chapter 2: Atoms - created from Mind Map Dilution of coloured substances Potassium manganate crystals dissolve in water- purple solution is formed When diluted, colour fades but doesn't dissapear until many dilutions Large number of particles of Potassium Ma... helensellers75
Atomic number, mass number and isotopes Structure of an atom: The nuclear model: Atoms contain 3 subatomic particles; protons, neutrons and electrons The protons and neutrons are found in the nucelus(found on the center of an atom) The nucleus is much small... yomum 21
Chapter 3: Atomic Structure - created from Mind Map How is it made? Most of mass is in the nucleus Numbers IsotopesExample: The electrons Shells Organised helensellers75
Ions and Particles. Ions Ionic compounds are formed when metals react with non-metals.E.g. copper sulfate        magnesium sulfate       sodium chlorideIonic compounds are made up of ions.Ions... daniellelim2000
Chapter 2 Ariana Isaacs

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