Which statements are true?
check all that apply.
a. if heat is added to a substance, the temperature increases unless there is a phase change.
b. if heat is added to a substance, the temperature always increases.
c. as heat is added to a substance, the temperature stays constant or goes down.
d. during a phase change, the temperature of a substance does not change.

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.