Describe the residue left on the filter paper after you have filtered the water, sand, and sodium carbonate mixture. What do you think this residue contains?
Describe the appearance of the filtrate that flowed into the evaporating dish. Could this filtrate be a mixture? If so, does it appear to be homogeneous or heterogeneous?
Describe the residue that remains after you evaporate the water from the filtrate in Step 17. What do you think this residue contains?
For ice describe the general appurtenance of dry ice in the beaker
Describe what happens when you place a burning wood slant into the beaker containing dry ice.
What evidence do you have that carbon dioxide gas is present in the beaker?
Did the carbon dioxide in the dry ice undergo a physical or chemical before you inserted the burning splint into the beaker? Briefly explain.
Anyone can tell me how to solve it step by step so that I will be able to understand what is going on?