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the phase of matter in which the particles are so tightly bound to one another that they can only vibrate.
compounds that are different colours in acid and alkali environments.
released energy - the energy released when new bonds are formed.
a chemical reaction where two molecules combine to form one single molecule. The elimination of...
the stratosphere extends from a height of 10 km to 50 km above the surface of the Earth.
bonds that form between the hydrogen atom of one molecule and an oxygen, nitrogen or fluorine...