In this activity, pupils investigate the behaviour of carts at different speeds and with different masses. The task is fairly open-ended; pupils must discover the concept of momentum for themselves and check whether momentum is conserved during a collision of Motion+ carts
Activity Impulse conservation in a collision of Motion+ carts
Process & Analysis
In this activity, pupils investigate the behaviour of carts at different speeds and with different masses. The task is fairly open-ended; pupils must discover the concept of momentum for themselves and check whether momentum is conserved during a collision of Motion+ carts
Activity Impulse conservation in a collision of Motion+ carts
In this activity, students investigate the nitrate content in, for example, pond or aquarium water. The nitrite formed is subsequently determined using the Griess reaction. The intensity of the color is proportional to the amount of nitrite, and thus indirectly to the original amount of nitrate. As a result, the nitrate content can be determined using a colorimeter.
Concepts learned:
- Extinction
- Spectrophotometry
- Calibration curve
- Lambert-Beer Law