The solid remain on the filter paper is Cacao, because It did not dissolve in water.
8. I would expect to see a dry Cacao. The water will boll and dry off. 9. My answer Is to question 7 is consistent with the observations at this step because effervescence occurred which means that Cacao was not dissolved, it was left over in the filter paper.
10. Based on my observation think Residue A Is not the same substance because when I added to filter paper It bubbled but when I added to residue A It didn’t react. 1.
No, because the color of residue B changed after it was mixed with 10 drops of 15% HCI. 12. I think it was chemical because it’s not the same anymore, also effervescence occurred, when HCI was mixed with residue B. 13.
At step 9 Cacao was separated from the Cacao. 14. The hot plate makes iodine hot while ice cubes keeps the dish cool. 15.
It is going under physical change, and the process called sublimation. 16. The boiling point is 99. 3 c 17.
The bobbling of the red substance Is higher than CHIC.When the temperature of he flask reaches the bobbling point the liquid rapidly converts to gaseous state. Home Assignment: 1 . The gas that was produced was when calcium carbonate reacts with hydrochloric acid carbon d’ oxide gas Is evolved.