Substance a has a specific heat that is 10 times greater than substance b. substance c's specific gravity is 25 times greater than substance b if all three substances are heated for the same amount of time, which one would have the lowest temperature

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.

b.final