A metal with a mass of 180 g and an initial temp. of 150°C is lowered into a calorimeter that contains 76.5 g of water at a temp. of 26.4°C. The calorimeter rises to a final temp. of 34.8°C. Calculate the specific heat capacity of the metal.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

the atomic mass is the bottom number on the element.

-steel jelly