Which observation about the rock best supports this classification? a. The rock is composed of several minerals.
b. The rock contains fragments of other rocks.
c. The rock has a vesicular texture.
d. The rock shows distorted and stretched pebbles.

14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->

Which substances have the lowest melting points: ionic covalent, or metallic

Is this correct if not can u correct me