1. **Problem:** Identify which elements in the table are metals based on the characteristics: malleable, ductile, shiny, and conductive to heat and electricity. 2. **Formula/Rule:** Metals are characterized by being shiny (lustrous), malleable, ductile, electrically conductive, and heat conductive. 3. **Step-by-step analysis:** - Copper: Shiny, malleable, ductile, electrically conductive, heat conductive. Matches all metal characteristics. - Silicon: Shiny, brittle, brittle, electrically conductive at high temperatures, poor heat conductivity at high temperatures. Not malleable or ductile, so not a full metal. - Sulfur: Dull, brittle, brittle, not electrically conductive, not heat conductive. No metal characteristics. - Carbon (Graphite): Dull, brittle, brittle, electrically conductive, not heat conductive. Only electrical conductivity, not metal. 4. **Answer to question 1:** Copper is classified as a metal. 5. **Answer to question 2:** Silicon has some metal characteristics (shiny, electrically conductive at high temperatures) but lacks malleability, ductility, and good heat conductivity. 6. **Answer to question 3:** Sulfur has no metal characteristics. 7. **Tin characteristics:** Shiny, malleable, ductile, electrically conductive, heat conductive. 8. **Answer to question 4:** Yes, tin has all the characteristics of a metal. 9. **Answer to question 5:** Malleability would be most important for plating on a can because the plating must be hammered or pressed into thin sheets without breaking. Final answers: - Metal: Copper - Some metal characteristics: Silicon - No metal characteristics: Sulfur - Tin is a metal - Most important property for plating: Malleability