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A phase transition is the transformation of a substance from one state of matter to another.
An exercise about the groups and structure of organic nitrogen compounds.
Examining the colour of cobalt(II) chloride in water and hydrochloric acid.
An exercise about compound ions.
An exercise about hydrocarbons.
The staggered conformation of ethane is more stable than the eclipsed conformation.
Hydrogen atoms within hydrogen molecules are held together by a covalent bond.
When the essential oil from the peel touches the candle flame, it burns and creates a ball of fire.