Basically since potassium chloride is an ionic compound as it consists of a metal and a nonmetal, the potassium atom will donate one of its valence electrons to chlorine that will accept it and as a result produce oppositely charged ions, where the K + ion and the Cl - ion will attract forming an ionic bond. The compound that results is potassium chloride.
3 is C i believe, and as for 4 minerals are solid, natural.. that's about all I can say...
False, gravity is a force, matter has mass and volume.
