University:
Jackson College
Course:
CEM-141 | General Chemistry I
Academic year:

2024
Views:

327

Pages:

3
Author:

velhaire9cd8

Bag of Change lab September 21, 2015 9:08 AM Purpose: To monitor the different kinds of changes between the various, unknown substances. Hypothesis: Whenthe chemicals mix, the substances will change in temperature and colour. Materials : ● Chemicals A, B, and C ● 2 small measuring spoons ● 50 mL graduated cylinder ● 2 resalable plastic bags ● Water Procedure: 1. observe the different attributes of each substance ( substance A, B, and C). 2. Record them. 3. Place the chemicals in a bag. ( one spoon of chemical A, one spoon of chemical B, and 10 mL of chemical C. ) 4. Quickly seal the bag 5. Mix the chemicals by pinching the bag 6. Record the different changes 7. When done, wash chemicals down the sink 8. Wash equipment 9. Put away equipment 10. Wash hands Observations: Chemical A. ● In little balls ● Looks like Styrofoam. ● Is hard like hard candy ● White ● Room temperature Chemical B. ● Fine powder ● White ● Room temperature. Chemical C. ● Blue liquid ● Resembles food colouring ● Room temperature ● Liquid state Mix time! (results) When we mixed the chemicals A and B, nothing happened. But when we added Chemical C ( the blue liquid)all these changes began to occur. ● ● ● ● ● The solid substances became liquids The white substances and blue liquid tuned orange The liquid became foamy The temperature of the mixture became hot Some gas was released Most important findings : w hen you mix the different kinds of unknown chemicals, many different changes may occur. Conclusion: the purpose of this experiment was record all the different changes that occurred and so many did to my hypothesis was correct. The changes in temperature and colour did occur.