–(a) State one
use of limestone, other than in making lime. [1]
–
–(b) Coke is
mainly carbon. Write a symbol equation for the burning of carbon. [2]
–
–(c) State the
name of the type of reaction which releases heat energy. [1]
–
–(d) The
heat produced by the burning coke causes thermal decomposition of
the limestone. Complete the word equation for the thermal decomposition
of calcium carbonate.
– calcium carbonate → [2]