atomic structure 0.0 / 5 ? ChemistryAtoms and compoundsIGCSEEdexcel Created by: sophie_kkCreated on: 16-12-19 19:38 atom smallest piece of an element that can still be recognised as that element 1 of 13 what are atoms made of? protons, neutrons and electrons (sub-atomic particles) 2 of 13 proton relative mass 1 relative charge +1 3 of 13 neutron relative mass 1 relative charge 0 4 of 13 electron relative mass 1/1836 relative charge -1 5 of 13 mass number number of protons + neutrons (top number) 6 of 13 atomic number number of protons (bottom number) 7 of 13 isotope atoms of the same element that have the same atomic number but different mass numbers 8 of 13 why does having different numbers of neutrons make no difference in chemical reaction? the chemical properties are controlled by number and arrangement of electrons, so number of neutrons makes no difference 9 of 13 relative atomic mass the average mass of an atom, taking into account the amount of each isotope present in that sample of element. 10 of 13 how to calculate relative atomic mass percentage x mass (small number) + other percentages x mass / 100 11 of 13 what is the same as proton number? atomic mass of an element 12 of 13 number of protons = number of electrons 13 of 13
Comments
No comments have yet been made