F321 Definition
- Created by: SAMEER IS CLEVER
- Created on: 18-05-14 19:55
Unit F321: Atoms, Bonds and Groups
Definitions to Learn
1. Atoms and Electron Structure
Isotopes atoms of an element with different numbers of neutrons and different masses
Relative atomic mass average mass of an atom relative to 1/12 of the mass of a carbon-12 atom
Relative isotopic mass mass of a particular isotope relative to 1/12 of the mass of a carbon-12 atom
Standard measurement RAM Carbon-12
Orbital a region that can hold up to 2 electrons with opposite spins
1st ionisation energy energy change when one mole of electrons is removed from one mole of gaseous atoms
Successive ionisation energy energy change when one mole of electrons is removed from one mole of gaseous positively charged ions
2. Equations and acids
Acid proton donor (H+ donor) which releases H+ ions in aqueous solution
Base proton acceptor (H+ acceptor) which releases OH- ions in aqueous…
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