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the isotope of hydrogen that contains two neutrons.
substances such as elements or compounds, that cannot be broken down into simpler substances by...
the forces between atoms within molecules: covalent, polar covalent, dative covalent, ionic and...
a solvent able to dissolve a large number of different chemical compounds. Water is the...
adhesive (sticky) and elastic, tending to gather together in drops rather than spread over a...