Academic Chemistry Mr. Gensits Section Review 7.3 Answer Key 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. cations electrons metallic electrical malleable/ductile ductile/malleable body-centered/face-centered face-centered/body-centered hexagonal close-packed alloy 11. 12. 13. 14. 15. NT ST NT AT AT 16. 17. 18. 19. 20. d e b c a 21. Solid metals consist of closely-packed cations surrounded by free-moving valence electrons, which make metals good conductors of electric current. As electrons enter one end of a bar of metal, an equal number leave the other end. Metal cations are insulated from one another by electrons. When a metal is subjected to pressure, the metal cations easily slide past one another. This behavior makes the metal malleable and ductile. 22. The superior properties of alloys result from the cumulative properties of all the constituents of the alloy. For example, an alloy can be more durable than one constituent but more malleable than another.