Chem - Folio
By: Jordan Kovacik and Lauren Posick
Safety First!
Single Replacment Reaction
The acid is filled 1/4 of the test tube
The nail was dropped in and small bubbles started to float from the nail to the top of the acid
Directions for Single Replacement
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
Dropping the NaHCO2 into the hot water
The NaHCO2 reacted with the water
The NaHCO2 started to bubble and then the bubbles started to make noises
Directions for the endothermic reaction
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
We poured the NaOH into the cold water.
The NaOH reacted by changing the water color to white and getting hot on the bottom of the beaker
Directions for exothermic reaction
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
We started a stick on fire and blow it out and the MnO2 reacted by starting the stick back on fire
The MnO2 didn't change color, but when the stick went into the test tube, just before hitting the acid mixed with the MnO2 and made a popping noise
Directions for decomposition reaction
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.