Atoms and elements 0.0 / 5 ? ChemistryAtoms and compoundsperiodic tableIGCSECIE Created by: RubybluCreated on: 10-04-18 11:30 atoms the smallest particles of matter that cannot be broken down further by chemicals means 1 of 25 nucleus the positively charged center of the atom consisting of protons and neutrons 2 of 25 electrons the smallest of the particles that make up an atom, they carry a negative charge 3 of 25 protons a subatomic particle found in the nucleus of every atom, they carry a positive charge 4 of 25 neutrons a subatomic particle found in the nucleus of atoms, they carry no charge 5 of 25 element contains only one kind of atom 6 of 25 groups the columns on the periodic table 7 of 25 periods the rows on the periodic table 8 of 25 atomic/proton number the amount of protons in the nucleus of an atom 9 of 25 charge of an atom an atom has no charge as there the same amount of electrons and protons are carried 10 of 25 nucleon/mass number the total number of protons and neutrons in the nucleus of an atom 11 of 25 identifying an atom can be done by the number of protons in it 12 of 25 isotopes atoms of the same elements which have the same proton number but a different nucleon number 13 of 25 radioisotopes radioactive isotopes (e.g. carbon-14) 14 of 25 alpha particles made up of 2 protons and neutrons 15 of 25 beta particles electrons moving at high speed (can be positive or negative) 16 of 25 gamma rays high energy rays 17 of 25 radioisotope uses to check for leaks, to treat cancer and to kill germs and bacteria 18 of 25 electron shells orbitals that surround the nucleus filled with electrons 19 of 25 distribution of electrons the first shell can hold 2 electrons and the rest can hold dup to 8 electrons 20 of 25 period number tells you how many shells there are 21 of 25 group number tells you how many electrons are on the outer shell 22 of 25 valency electrons the electrons located on the outer shell 23 of 25 unreactive atoms have full outer shells 24 of 25 electron arrangement/distribution, electronic structure/configuration how the electrons are arranged 25 of 25
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