Question

Which two substances have no fixed shape and no fixed volume?

crystalline solid and noncrystalline solid
noncrystalline solid and liquid
plasma and liquid
gas and plasma


If solid iron is dropped in liquid iron, it will most likely

float.
sink.
freeze.
condense.

Answer 1

1) gas and plasma — both have no fixed shape and no fixed volume.
2) sink — solid iron is denser than liquid iron, so it will sink.