Match the following with the correct answer. Study of heat change in chemical reactions is called Types of systems are When heat has to be supplied to the system by surrounding is known as Milk kept in a closed thermoflask is a/an Work done by the system on the surrounding would be process. A open system, closed system, isolated system B. thermochemistry C. endothermic D. exothermic. E. isolated system F, negative Gclosed system H.postive