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Symbols and Formulae

recognise symbols and names for common elements and recall the diatomic elements;
interpret chemical formulae by naming the elements and stating the number of each type of atom present;
write chemical formulae of compounds;

demonstrate understanding that chemical reactions use up reactants and produce new substances called products;construct word equations to describe the range of reactions covered in this specification; and recognise that in a chemical reaction no atoms are lost or made but they are rearranged, and as a result we can write balanced symbol equations showing the atoms involved.

write balanced symbol equations for all reactions covered in this specification and for unfamiliar chemical reactions when the names of the reactants and products are specified;


write balanced ionic equations for reactions covered in this specification;
write half equations for reactions covered in this specification;
demonstrate knowledge and understanding that in chemical equations the three states of matter are shown as (s), (I) and (g), with (aq) for aqueous solutions, and include appropriate state symbols in equations for the reactions in this specification;
 

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