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Physical and Chemical Changes Make-up Lab

Physical and Chemical Changes Make-up Lab. Station 1. Station 1: Silver Nitrate (AgNO 3 ) and Copper (Cu) Metal Caution: Silver Nitrate will stain skin and clothing.

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Physical and Chemical Changes Make-up Lab

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  1. Physical and Chemical Changes Make-up Lab

  2. Station 1 • Station 1: Silver Nitrate (AgNO3) and Copper (Cu) Metal • Caution: Silver Nitrate will stain skin and clothing. • Place 2 beads of copper shot in a test tube. Add 1 dropper full of .1M Silver Nitrate solution to the test tube. Swirl to mix. Let sit for 2-3 minutes. Observe and record any changes that occur. Dump the contents of the test tube in the waste container and rinse the test tube with water.

  3. Station 1 Reactants

  4. Station 1 Products

  5. Station 2 • Station 2: Mixing Sodium Carbonate (Na2CO3) Solution and Phenolphthalein Solution • Place 1 dropperful of sodium carbonate solution in a test tube. Add 5 drops of phenolphthalein solution into the same test tube. Observe and record any changes that occur. Dump the chemicals in the sink and rinse the test tube with water.

  6. Station 2 Reactants

  7. Station 2 Products

  8. Station 3 • Station 3: Water • Observe the water boiling. Record your observations. Do not touch – it is hot! Observe the ice. Record your observations. Do not touch—it is cold!

  9. Station 3 Reactants Ice before Melting Water before Boiling

  10. Station 3 Products Water during Boiling Ice after Melting

  11. Station 4 • Station 4: Chromatography • Pour approximately 10 mL of salt water into a 50 mL beaker. Using a toothpick, place 4 dots of colored solution, one on top of the other, onto chromatography paper about 2.5 cm from one end. Allow the spots to dry. Place the piece of chromatography paper into the beaker so that the dot is above the water line. Observe for five minutes. Dump the salt water in the sink and throw the chromatography paper away.

  12. Station 4 Reactants

  13. Station 4 Products

  14. Station 5 • Station 5: Baking soda (NaHCO3) and Acetic Acid (HC2H3O2) • Caution: Acetic Acid (HC2H3O2)is a weak acid (corrosive) and has a strong odor. • Place 1 dropperful of Baking Soda solution into a test tube. Add 1 dropperful of Acetic Acid solution into the same test tube. Swirl to mix. Observe and record your observations. Pour the solution down the drain and rinse the test tube with water.

  15. Station 5 Reactants

  16. Station 5 Products

  17. Station 6 • Station 6: Lead nitrate solution (Pb(NO3)2) and Potassium Iodide solution (KI) • Add 1 dropperful of Pb(NO3)2 solution to the test tube. Then, add 1 dropperful of KI solution into the same test tube. Observe and record your observations. Dispose of this material in the waste container, and rinse the test tube and clean with a test tube brush.

  18. Station 6 Reactants

  19. Station 6 Products

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