- Physical Sciences
any different samples of a chemical compound will be made of the same elements (will have the same elemental composition), and these elements will be present in the same proportions.
polymerisation reaction that is started by a radical.
a polymer used in manufacture of synthetic resins, fibres and plastics.
a substance that can lose a proton in an acid-base reaction.
non-rechargeable cells, such as the zinc-carbon torch cell.