Name : ___________________________

TA : _________________

1. How you can separate iron filings from a heterogeneous mixture of them with sand? (1 pts)

2. In your vacuum filtration setup, why should you turn off the water, after you disconnect the hose? (1 pts)

Use the solubility table information to answer the following questions. (2pts)

soluble in	hot water	cold water	acid	base
Al(OH)3	no	no	yes	yes
NaClO4	yes	yes	yes	yes
Mn(OH)2	no	no	yes	no

A ) Could you separate Al(OH)3 and Mn(OH)2 by using acid? Why?

B) How you can separate and recover the components of a mixture of
Al(OH)3 and NaClO4 ?

4) In this experiment, why did you use the boiling stones (boiling chips)? (1pts)