dec 12 novel vocab

Use Spelling City link again to test yourself and learn how to use each of the following vocabulary in proper sentences:

• sympathetic
• appreciate
• sheepishly
• obviously
• cerebral palsy
• economics
• scalper
• soothing
• sidestepped

dec 12 math corrections & task

dec 12 lab write up structure & hmwrk corrections

Purpose: 
In this experiment, I will determine how much drink powder it will take to make a saturated solution, that is, a solution in which no more solute (drink powder) can dissolve in a solvent (water).

Hypothesis: 
1.  If I add ____ spoonfuls of drink powder to room-temp water, then I think it will dissolve to form an unsaturated solution, that is, a solution in which more solute can be dissolved.
2.  If I add  ____ spoonfuls of drink powder to room-temp water, then I think will dissolve to form a saturated solution, that is, a solution in which no more solute can dissolve.

Procedure:
1.  Measure 100ml of water.  Add 1 spoonful (5ml or 4gr) of drink powder.  Stir.
2.  Continue adding spoonfuls of drink powder, stirring after each one.
3.  Stop adding drink powder when no more will dissolve.

Observations:
I noticed that ________ spoonfuls of drink powder dissolved in 100ml of water.  (1 spoonful measures 5ml or 4gr x ___#of spoonfuls = ___ml or ___gr of solute)

Analysis:

Concentration = mass of solute / 100ml of solution
                              ___gr       / 100ml of solution = ____gr  /  200ml

Conclusion:

What did you learn about the solubility of a solute?  
How accurate was your hypothesis?