Question 9 of 34 Which statement best describes what happens when heat is transferred from
a toaster to bread?
A. Some of the thermal energy is transferred to warm the bread, and
some is destroyed.
B. Some of the thermal energy changes to chemical energy, and
some is destroyed.
C. The thermal energy used to toast the bread is destroyed.
D. The thermal energy used to toast the bread changes to chemical
energy
SUBMIT

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.

c8h10 is your answerr

fe 55.85 g/mol and h2o 18.02 g/mol.