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PROPERTIES OF IONIC COMPOUNDS

PROPERTIES OF IONIC COMPOUNDS. IONIC COMPOUND. ONE WITH IONIC BONDS Ex: NaCl CuSO 4. OBJECTIVE. After completing this presentation you should be able to: L ist and explain 4 properties of ionic compounds List several people who care about each property and explain why they care.

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PROPERTIES OF IONIC COMPOUNDS

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  1. PROPERTIES OF IONIC COMPOUNDS

  2. IONIC COMPOUND • ONE WITH IONIC BONDS • Ex: NaCl CuSO4

  3. OBJECTIVE After completing this presentation you should be able to: • List and explain 4 properties of ionic compounds • List several people who care about each property and explain why they care

  4. 1) FORM CRYSTALS • CRYSTAL: A REGULAR GEOMETRIC PATTERN

  5. WHO CARES? • A) GEOLOGISTS • B) GEMOLOGISTS • * COMPUTER CHIP DESIGNERS

  6. WHY FORM CRYSTALS? • IONS WANT CLOSEST PACKING POSSIBLE • A PATTERN FORMS (THE PATTERN DEPENDS ON THE SIZE OF THE IONS)

  7. 2) HIGH MELTING POINT • TEMPERATURE REQUIRED TO CHANGE THE SOLID TO LIQUID AVERAGES 1000 C

  8. WHO CARES? • MATERIALS SCIENTISTS • SPECIALTY CERAMICS • PEOPLE WHO NEED HIGH MELTING POINT MATERIALS!!!

  9. WHY HIGH MELTING POINT? • THE ELECTROSTATIC FORCE IS VERY STRONG • IT TAKES A LOT OF ENERGY TO BREAK THE FORCE TO ALLOW THE CRYSTAL TO MELT

  10. 3) DISSOLVE IN WATER • THEY’RE WATER SOLUBLE

  11. WHO CARES? • FARMERS • MEDICAL PROFESSIONALS • ATHLETES

  12. WHY WATER SOLUBLE? • WATER IS POLAR • THE IONS IN THE CRYSTAL ARE AS ATTRACTED TO THE WATER’S CHARGES AS TO OTHER IONS • THERE IS MORE WATER AND THE WATER MOVES MORE

  13. 4) THEY ARE ELECTROLYTES • ELECTROLYTE: CONDUCT ELECTRICITY WHEN DISSOLVED (OR MOLTEN)

  14. WHO CARES? • MEDICAL PROFESSIONALS • ANYONE WHO WANTS TO BE HEALTHY

  15. ELECTROLYTES Na+: important to many systems K+: respiratory system Ca+2& Mg+2: large muscle groups Others include: Zn+2, Li+, I-

  16. WHY ARE THEY ELECTROLYTES? • IONS WILL CONDUCT ELECTRICITY WHEN THEY CAN MOVE • WHEN DISSOLVED THEY ARE FREE TO MOVE AND CARRY THE ELECTRICAL CURRENT • WHEN SOLID THEY CAN’T MOVE THEREFORE THEY DON’T CONDUCT

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