Question

Which is true? (1 point)
A. Electrons are mixed mostly evenly within atoms.
B. Electrons orbit in fixed places around the nuclei of atoms.
C. Electrons move not entirely predictably in electron clouds around the nuclei of atoms.
D. Electrons usually carry a positive charge.

A pure substance can be which of the following?(1 point)
A. a solution
B. a heterogeneous mixture
C. a compound
D. a homogeneous mixture

Answer 1

C. a compound

Answer 2

Which is true? (1 point)
A. Electrons are mixed mostly evenly within atoms.
B. Electrons orbit in fixed places around the nuclei of atoms.
C. Electrons move not entirely predictably in electron clouds around the nuclei of atoms.
D. Electrons usually carry a positive charge.

Answer 3

C. Electrons move not entirely predictably in electron clouds around the nuclei of atoms.