the layer from 80 km to 90 km above the surface of the Earth.
having fixed amounts of energy.
the scale used to compare the masses of atoms. Atoms are compared to carbon-12 atoms.
a chemical reaction between an acid and a base to form salt and water. They have opposite...
bases that only partially ionise e.g. H2O.
if the equilibrium of a system is disturbed by a change in temperature, pressure or...
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