1. which of these has only one component?
element
compound
mixture
molecule
2. which of these is a compound?
sugar
window cleaner
nitrogen
silver
3.which of these contains two or more components spread unevenly?
element
compound
heterogeneous mixture
homogeneous mixture

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.