Gather the following materials for this experiment. When you are done with this experiment, set the materials aside. You will use them again in the experiment for Part 3.

Question

clear 12-ounce plastic cups (7 cups total)
effervescent antacid tablets (1 package)
hot and cold tap water
ice cube(s)
marking pen
pen or pencil
sheet of graph paper
stopwatch or a watch or clock with a second hand
thermometer
Part 2: Analyze the Temperature Experiment
Graph the data you collected in Part 1 and analyze it to understand the effect of temperature on reaction rate. Once your graph is complete, answer the questions that follow.
Step 1: Graph Your Data
Create a line or bar graph of temperature versus reaction time using the data from all three cups. Make sure your data is accurately represented. Note: Insert your data here.

Answer 1

To create a graph of temperature versus reaction time for your experiment, follow these steps:

Step 1: Collect Your Data

Before graphing, gather the data from your experiment. You would have recorded the reaction time of the effervescent antacid tablets in different temperatures: cold, room temperature, and hot water. Typically, you would have three data points like this:

• Cold Water (e.g., Ice water, 0-10°C): Reaction time (seconds)
• Room Temperature Water (e.g., 20-25°C): Reaction time (seconds)
• Hot Water (e.g., 50-60°C): Reaction time (seconds)

Assuming the following hypothetical data from your experiment for illustration:

• Cold Water: 45 seconds
• Room Temperature Water: 30 seconds
• Hot Water: 15 seconds

Step 2: Create Your Graph

You can use graph paper or a digital tool (like Excel, Google Sheets, or a graphing software) to create your graph. Here’s how you could set it up:

1. Label the Axes:

   • X-axis (horizontal): Temperature (°C)
   • Y-axis (vertical): Reaction Time (seconds)

2. Plot the Data Points:

   • Cold Water (0-10°C, 45 seconds) = Point (0, 45)
   • Room Temperature (20-25°C, 30 seconds) = Point (22.5, 30)
   • Hot Water (50-60°C, 15 seconds) = Point (55, 15)

3. Draw the Graph:

   • Use a line or bar graph to connect or represent the points.

Example of Data Table

| Temperature (°C) | Reaction Time (seconds) | |-------------------|-------------------------| | 0-10 | 45 | | 22.5 | 30 | | 55 | 15 |

Step 3: Analysis Questions

After graphing, analyze the data by answering the following questions:

1. What trend do you observe in your graph?

   • As the temperature increases, the reaction time decreases.

2. How does temperature affect the reaction rate?

   • Higher temperatures increase the reaction rate, leading to faster dissolving of the antacid tablets.

3. What might be the reason for this trend?

   • Higher temperatures often provide more kinetic energy to molecules, leading to more frequent and energetic collisions, which speeds up the chemical reaction.

4. What other factors could affect reaction rates?

   • Concentration of reactants, surface area of reactants, presence of catalysts, and proper stirring could also affect the reaction rates.

Conclusion

Once you have completed your graph and answered the questions, make sure to set aside the materials as instructed, as you will need them for Part 3 of your experiment.