Answer:
I'm pretty sure its C. limestone.
A nonmetal and a nonmetal will make molecular compounds like H2O and CO2
The maximum the fourth shell can have is 32.
Answer:
the newspaper one is a chemical change because the chemicals in the paper have reacted with something and turned a different color. the wax one is a physical change because it is a change in the phase of matter, which is always a physical change (still the same substance chemically)
