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an atom or group of atoms that replaces a hydrogen atom in an organic compound.
electrochemical cells. Electricity is produced from chemical reactions in the cell.
Galvanic cells are electrochemical cells. Galvanic cells generate a voltage across their...
Gamma radiation is the most penetrating and dangerous form of electromagnetic radiation.
electromagnetic waves, similar to X-rays, but with a much shorter wavelength.
the phase in matter in which the particles are far apart and can move freely.
a special type of ion exchange reaction in which either carbonic acid or sulfurous acid is...
ionisation chamber in which single ionising events can be detected.
a molecule that is so big that we can see it, e.g. a diamond, a salt crystal and a piece of...