Question 83
Figure 7.31 shows the apparatus used for the thermal decomposition of calcium nitrate to form calcium oxide, nitrogen dioxide and oxygen.

An energy level diagram is used to show the changing energy levels during a chemical reaction. It can show whether a reaction is exothermic or endothermic.
Figure 7.32 shows the energy level diagram for the thermal decomposition of calcium nitrate. Complete the diagram by choosing the correct words to label A and B in the diagram.
Words: reactant; products.


An energy level diagram is used to show the changing energy levels during a chemical reaction. It can show whether a reaction is exothermic or endothermic.
Figure 7.32 shows the energy level diagram for the thermal decomposition of calcium nitrate. Complete the diagram by choosing the correct words to label A and B in the diagram.
Words: reactant; products.

