Chem - Folio

By: Jordan Kovacik and Lauren Posick

Safety First!

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Single Replacment Reaction

Directions for Single Replacement

1. Obtain a test tube rack and 4 test tubes.

2. Carefully pour HCl into one test tube 1/4 full.

3. Predict what will happen when you add aluminum to hydrochloric acid.

4. Add on little clump of aluminum to the HCl and observe.

5. Predict what will happen when you add iron to hydrochloric acid.

6. Add the Fe nail to HCl and observe.

7. Predict what will happen when you add zinc to hydrochloric acid.

8. Add on little Zn clump to the HCl and observe.

9. Predict what will happen when add magnesium to hydrochloric acid.

10. Add one Mg strip to the HCl and observe.

11. Re-observe the aluminum and the iron.

Endothermic Reaction

Directions for the endothermic reaction

1. Obtain another 250ml beaker and fill to 100ml mark with cold HOH from the faucet.

2. Predict what will occur when you add 25g of NaOH to the cold water.

3. Measure 25g of NaOH using a weighing paper on the balance.

4. Take the temperature of the HOH and record in the data table.

5. Add the NaOH to the HOH.

6. When the reaction is complete retake the temperature of the HOH.

Exothermic Reaction

Directions for exothermic reaction

1. Obtain one 250ml beaker and fill to 100ml mark with hot HOH from the faucet.

2. Predict what will occur when you add 4 tablets of NaHCO2.

3. Take the temperature of the HOH and record in the data table.

4. Add the 4 tablets 2 at a time.

5. When the reaction is complete retake the temperature of the HOH.

6. Clean supplies.

Decomposition Reaction

Directions for decomposition reaction

1. Obtain one test tube rack and 4 test tubes.

2. Label the test tubes 1-5 in pencil only in the frosted area.

3. In each test tube place Hydrogen Peroxide 1/4 full.

4. Obtain a supply of NaCl.

5. Using the stick place the indicated amount in one of the test tubes.

6. Place your thumb over the mouth of the test tube.

7. Have your partner light a wood splint with a match and then let it burn to get a good flame, then blow it out.

8. Immediatly place the glowing red splint tip in the gas in the test tube right above the hydrogen peroxide.

9. Observe what happens to the glowing splint and listen very carefully.

10. Place your data in the provided chart.