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polyvinyl acetate, a colourless thermoplastic material used in inks and adhesives.
organisms that use dead organic material as a food source and thus recycles them.
a reaction that takes place automatically by itself, without requiring extra stimulation.
molecule where the ratio of atoms is 1 : 3. So the bond angle is 1200, for example BF3
a proton that forms a coÂordinate covalent bond with a water molecule H3O+