Your assignment is to take a mixture of BB’s, foam, salt, and sand, and separate it into its components. After you find the mass of each component, you need to determine the percent composition of the mixture (what percent is BB’s, foam, etc.).
The mixture will include –
7 mL BB’s
1 scoop foam
5 mL salt
15 mL sand
Tools in Basket:
Funnel
2 – 50 mL beakers
Crucible tongs
Beaker tongs
Glass stir rod
Evaporating dish
Your assignment is to take a mixture of BB’s, foam, salt, and sand, and separate it into its components. After you find the mass of each component, you need to determine the percent composition of the mixture (what percent is BB’s, foam, etc.).
The mixture will include –
7 mL BB’s
1 scoop foam
5 mL salt
15 mL sand

Actual values
28.48 g BB’s
.11 g Foam
5.96 g Salt
22.27 g Sand
Discussion Questions:
Calculate your percent error for each component.
What step(s) in your method could have led to the errors you got with the masses of the components?
How would you change your method to prevent these errors if you did the lab again?
Actual values
28.57 g BB’s
.03 g Foam
6.71 g Salt
22.64 g Sand
Discussion Questions:
Calculate your percent error for each component.

What step(s) in your method could have led to the errors you got with the masses of the components?
How would you change your method to prevent these errors if you did the lab again?