SiO2 + NaCl + CaCO3
Step 1? 
2. 
10.00 g* of
Yes
No
CaCO3
No
Yes
NaCl
No
No
SiO2
Reacts with 3M HCl
Soluble in H2O
*TODAYÕS EXPERIMENT:
2.5 to 3.0 grams unknown only.
Filtrate?
Residue?