What is the correct label for a solution? a. a homogeneous mixture b. a graduated substance c. a heterogeneous mixture d. a primary mixture of elements

The answer is A. Answers B, C, and D are incorrect. A and C sound similar but are different in many ways. Source- I took this test. Answer A

C. which metal is less dense

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf