Properties of Ionic and Covalent Bonds

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Presentation transcript:

Properties of Ionic and Covalent Bonds

Ionic Compounds (Review) Ionic: Metals and non-metals / Transfer their electrons Name: sodium oxide Chemical Formula: Na2O

Properties of Ionic Compounds Strong attraction between oppositely charged ions (cations and anions) – strong bond High melting point Conduct electricity when dissolved in water Hard Very little smell Soluble in water

Covalent or Molecular Compounds (Review) Two non-metals Share electrons

Properties of Covalent Compounds Bonds are strong but attraction between shared electrons is weak Low melting points Do not conduct electricity Soft Often have a scent Not easily dissolved in water

Electrolytes Electrolyte: a substance that when it is dissolved in water (aqueous solution) can conduct electricity. Ionic compounds in aqueous solutions are electrolytes Molecular compounds in aqueous solutions are considered to be non-electrolytes.

Major electrolytes in your body sodium (Na+) potassium (K+) chloride (Cl-) calcium (Ca 2+) magnesium (Mg 2+ ) bicarbonate (HCO3-) phosphate (PO42-) sulfate (SO42-)

In humans, electrolytes help with a number of physical and vital processes. Many heart and nerve functions, muscle control and coordination, and the body's ability to absorb fluids all depend on a healthy balance of electrolytes. Many sports drinks contain added potassium and sodium to help restore the body's proper electrolyte balance after intense physical exertion.

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