IB Chemistry Definitions - Standard Level

Practise and master the definitions that correspond to the command terms define or distinguish used through out the IB Chemistry course.

1. A reaction that releases heat to the surroundings as a result of forming products with stronger bonds than the reactants.

  • Chemical Reaction
  • Exothermic Reaction
  • Endothermic Reaction
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2. Accept electrons and become reduced.

  • Oxidising Agent
  • Oxidised Reactants
  • Reduction

3. The amount of solute in a known volume of solution - is often represented by square brackets around the substance

  • Concentration
  • Ligand
  • Solvent

4. The average mass of an atom, taking into account the relative abundances of all the naturally occurring isotopes of the element, relative to one atom of C-12

  • Mass Number
  • Relative Atomic Mass
  • Relative Molecular Mass

5. The tendency of an atom in a molecule to attract a shared pair of electrons towards itself.

  • Electronegativity
  • First Ionization Energy
  • Electron Affinity


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