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 homogeneous mixture of a solvent with a solute - there is usually some interaction between the solvent and solute molecules

  • Solution
  • Solvent
  • Solute
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2. The minimum energy required for a chemical reaction to take place.

  • First Ionization Energy
  • Activation Energy
  • Catalyst

3. The sum of the protons and neutrons in the atom's nucleus

  • Isotopes
  • Mass Number
  • Atomic Number

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

  • Electron Affinity
  • Electronegativity
  • First Ionization Energy

5. Acid is an electron-pair acceptor

  • Lewis Acid
  • Bronsted-Lowry Acid
  • Strong Acid


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