Table 7.1 shows the results of four experiments. Table 7.1 (i) State which experiment shows the greatest temperature change. (ii) State which experiment is the most endothermic. (iii) In experiment 4, magnesium was added to dilute hydrochloric acid. Complete the symbol equation. $$\[ \mathrm{Mg}+\ldots . \mathrm{HCl} \rightarrow \mathrm{MgCl}_{2}+\ldots \ldots \ldots . . \]$$ N (iv) Fig. 7.1 shows an incomplete reaction pathway diagram for an endothermic reaction. Fig. 7.1 Complete Fig. 7.1 by labelling: - the vertical axis - the reactants - the products.

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