7. Which statement is an inference? a. Gage's body was exhumed and his skull displayed
b. Gage's personality was changed dramatically after the accident.
c. The part of the brain damaged by the iron was the frontal lobe.
d. Gage would have recovered fully had it not been for the infection.

12 is it do you think so

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.

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