What do you make when you hit a rock with a hammer

What does a particular point on a line of a phase diagram represent? o a. the maximum temperature a substance can exist at without bonds breaking b. the pressure created by the kinetic energy of molecules at a particular temperature c. the melting point or boiling point of a substance at a specific pressure d. the conditions in which temperature and pressure have equal effects on a substance

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

How do scientists think that gravity affected the formation of our solar system?