Activity Overview
In this activity, students' will use a Temperature Sensor to collect data and then analyze that data to determine the effect of temperature increases on the rate of dissolving. They will identify temperature as a factor in dissolving rate of reaction.
Before the Activity
Connect the Temperature Sensor in channel 1 of the CBL 2
Download DataMate™ program
See the attached PDF file for detailed instructions for this activity
Print pages 49 - 53 from the attached PDF file for your class
During the Activity
Distribute the pages to your class.
Complete the Hypothesis section on the Data Collection and Analysis page and predict the effect of water temperature on the dissolving time of a sugar cube
Follow the Activity procedures:
Place the temperature sensor in the first beaker with water and verify that the temperature is at 25' C
Add one sugar cube and start timing
Stir constantly
When the sugar cube dissolves stop the timer
Calculate the time taken to dissolve
Repeat the activity with water at 5' C and 35' C
Record the time and temperature data
Graph the data using the linear regression function
After the Activity
Students' will complete Student Data Collection and Analysis Sheet.
Review student results
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary