Single Replacement Reaction Lab Names: __________________________
Problem: What would be the products of the reaction of Copper (II) chloride plus aluminum?
Hypothesis: Write a balanced equation for the reaction. Explain what your products will be.
Materials: Copper (II) chloride, one piece of aluminum foil (10 cm x 10 cm), 250 mL beaker,
stirring rod, thermometer, distilled water, stopwatch, safety goggles, balance
1. Mass 3 grams of copper (II) chloride and make observations about its physical
2. Pour 100 mL of distilled water into the copper (II) chloride. Stir with the stirring rod.
3. Make an observation about the copper chloride dissolved in water.
4. Place the thermometer into the copper (II) chloride solution and make an initial
measurement of temperature. Record this temperature for time zero in the data table.
Leave the thermometer in the solution.
5. Lightly crumple the aluminum foil and place in the beaker. You can push it under the
surface with the stirring rod.
6. Measure the temperature every thirty seconds for four minutes. Record the temperatures
in the table below.
7. Make as many observations as you can about the reaction in the beaker.
Observations before the chemical reaction
Solid Copper (II) Chloride
Copper (II) chloride
dissolved in water
Temperature after the aluminum is added
Time (min) Temperature (°C) Time (min) Temperature (°C)
Observation: After the addition of Aluminum foil
Solid in the beaker
Liquid in the beaker
1. Using the equation created in the hypothesis, what happened to the aluminum when it
was placed into the copper (II) chloride solution?
2. A new substance (solid- precipitate) formed in the liquid. Describe its appearance.
Using your hypothesis, predict what this precipitate was.
3. Based on your hypothesis, the liquid remaining in the beaker is probably what
4. What evidence do you have that a chemical reaction has taken place?