AS chemistry key words flash cards 3.5 / 5 based on 2 ratings ? ChemistryAcids, bases and saltsASAll boards Created by: HeiwaCreated on: 14-09-12 20:55 what is Ionisation energy? The amount of energy needed to remove one electron, from each atom, in a mole of atoms, in the gas phase. 1 of 12 What is successive ionisation energies? The amount of ionisation energy needed to remove each electron in turn. 2 of 12 What is an isotope? An atom of an element that has a different number of neutrons, but the same number of protons. 3 of 12 define,relative atomic mass. the weighted mean mass of an atom of an element, compared to 1/12th of the mass of carbon 12. 4 of 12 define,relative isotopic mass. The mass of an atom of an isotope compared to 1/12th of the mass of an atom of carbon 12 5 of 12 What does RMM stand for ? Relative molecular mass 6 of 12 What does RFM stand for? Relative formula mass 7 of 12 define, relative molecular mass. The weighted mean mass of a molecule compared to 1/12th the mass of an atom of carbon 12. 8 of 12 define, relative formula mass. The weighted mean mass of a formula unit compared to 1/12th of the mass of an atom of carbon 12.what 9 of 12 What is avagadro's number? 6.02 x10 (to the power of) 23 10 of 12 what is the formula to work out molar mass? mass/ number of moles 11 of 12 define a mole a mole of a substance contains the same number of particles as there are in 12.0g of carbon 12 12 of 12
Key points for OCR AS chemistry Unit 2 (ideal for flash cards, podcasts or just general reviewing) (1) 0.0 / 5
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