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N3-4

Bonding - Properties. N3-4. 5. 1. 2. 3. 4. 10. 6. 7. 8. 9. 11. 12. 13. 14. 15. 16. 17. 1. What is an electric current ?. answer. A flow of electrons. 2. What is an electrical CONDUCTOR ?. answer. A substance that allows electricity to pass through it.

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N3-4

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  1. Bonding - Properties N3-4 5 1 2 3 4 10 6 7 8 9 11 12 13 14 15 16 17 Calderglen High School

  2. 1. What is an electric current ? answer A flow of electrons Calderglen High School

  3. 2. What is an electrical CONDUCTOR ? answer A substance that allows electricity to pass through it Calderglen High School

  4. 3. What is an electrical INSULATOR ? answer A substance that does NOT allow electricity to pass through it Calderglen High School

  5. 4. What types of substances conduct electricity ? answer Metals Graphite (form of carbon) Molten ionic compounds Ionic solutions Calderglen High School

  6. 5. What types of substances do NOT conduct electricity ? answer Non – metals (except carbon Graphite) Solid ionic compounds Covalent compounds Calderglen High School

  7. answer 6. Complete the table? Yes Yes No Yes Yes No NoNo No No Calderglen High School

  8. answer 7. Fill in the typical melting points for these structures. (i.e. high, low, v. high etc) High High Low Very High Calderglen High School

  9. answer 8. Fill in the blanks to suggest structures. (e.g. Ionic, Covalent molecular, Metallic, Covalent network) Covalent Network Ionic Covalent Molecule Metallic Calderglen High School

  10. 9. How do metals conduct electricity ? answer Electrons flow through the metal. Calderglen High School

  11. 10. Why do ionic solids NOT conduct electricity ? answer The ions are not free to move Calderglen High School

  12. answer 11. What type of structure is shown? Suggest a name for a substance with this type of structure. O O O O O O O O O O C C C C C Covalent molecular e.g. carbon dioxide (CO2) Calderglen High School

  13. 12. Describe the structure of an IONIC solid answer An ionic solid consists of a network or LATTICE of oppositely charged ions Calderglen High School

  14. 13. Why do ionic compounds conduct when molten but not when solid? answer Ions are FREE TO MOVE when MOLTEN. Ions cannot move in a solid. Calderglen High School

  15. 14. Do ionic solids dissolve in water? answer YES . Most Ionic solids DISSOLVE in water. The lattice breaks up and the ions spread out. Calderglen High School

  16. 15.Do covalent compounds conduct electricity? answer NO! Calderglen High School

  17. 16. What type of structure is shown?Suggest a name Image: BBC website answer IONIC LATTICE e.g. Sodium chloride (any metal / non metal compound) Calderglen High School

  18. 17. What type of structure is shown?Suggest a name Image: BBC website answer Metallic e.g. Sodium, iron, copper…(any metal) Calderglen High School

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