Which of the following choices contains a chemical change? (*hint: ask yourself, which of these things will CHANGE the substance, not just it's phase)*
A. phase change, melting point, mass
B. phase change, boiling point, volume
C. phase change, catches on fire, boiling point, mass

since electrons are negative the answer is neagtaive

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms

the answer your looking for is c).