3.1 Complete the diagram below to show the position and charge of the ions in potassiurn bromide. Write a symbol in each blank circle to show whether it is a potassium ion or a bromide ion.
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3.2 Give one advantage and one disadvantage of using the type of diagram
above to represent the structure of an ionic compound,
Advantage
Disadvantage: -
(2)

answer: i dont know the answer but this might

explanation:

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chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.