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an acid that ionises completely, e.g. HCl, HNO3 and H2SO4
the introduction of halogen atoms into a compound by addition or substitution.
the part of the atmosphere that extends to a height of 10 km above the surface of the Earth.
the measurements taken by the researcher. The variable that is not dependent on another variable...
molecule where the ratio of atoms is 1 : 3. So the bond angle is 1200, for example BF3