A 10 g sample of an unknown metal is cooled from 100 °C to 21.6 °C in a calorimeter of 100 g of water. The temperature of the water rises from 20.0 °C to 21.6 °C. The specific heat of water is 4.184J/g°C. Calculate the specific heat of the unknown metal to determine the identity of the metal using the table below. Metal Specific Heat (J/g°C) Magnesium 1.047
Aluminum 0.900
Tin 0.226
Nickel 0.443
Show work here: Specific heat of unknown metal: The metal is (circle one): Magnesium Aluminum Tin Nickel

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.