# data[].attributes.body
The ESLR's that were addressed in this activity are Effective Communicators and Responsible Members of society. Effective Communicator was addressed in this activity because we used technology and other resources to present information.A lso Responsible Members of society was shown when we work together to do many experiments.

# data[].attributes.body
We got a negative number for trial # 2.  I believe we got a negative percent error because some of the water was left in the beaker and did not all evaporate.

# data[].attributes.body
We got a postive percent error on trial #1. I belive we got this because some of the salt was on the watch glass and not in the beaker. Another reason we got a postive number is that some of the salt might have been left in the flask so not all the salt was in the beaker.

# data[].attributes.headline
Trevor Staffieri,  VIctor Phan, Anthony Tieu  group:1                                                                                    p:1

# data[].attributes.subject
Trevor Staffieri,  VIctor Phan, Anthony Tieu  group:1                                                                                    p:1

# data[].attributes.headline
Last we measured the beaker with the salt in it.

# data[].attributes.subject
Last we measured the beaker with the salt in it.

# data[].attributes.headline
We had to move the beaker every 30 seconds so that it would cool down.

# data[].attributes.subject
We had to move the beaker every 30 seconds so that it would cool down.

# data[].attributes.headline
After we took the beaker of the heating plate it looked like this.

# data[].attributes.subject
After we took the beaker of the heating plate it looked like this.

# data[].attributes.headline
The water started to boil and the salt began to crystallize 

# data[].attributes.subject
The water started to boil and the salt began to crystallize 

# data[].attributes.headline
After a few minutes, the glass started to get a foggy.

# data[].attributes.subject
After a few minutes, the glass started to get a foggy.

# data[].attributes.headline
Then we poured the mixture in a beaker, put it on a heating plate, and let it boil.

# data[].attributes.subject
Then we poured the mixture in a beaker, put it on a heating plate, and let it boil.

# data[].attributes.headline
After that we put 25 mL in a graduated cylinder. Then poured it in the flask and mixed them.

# data[].attributes.subject
After that we put 25 mL in a graduated cylinder. Then poured it in the flask and mixed them.

# data[].attributes.headline
The first step in measure was measuring the amount of salt we put in the flask.

# data[].attributes.subject
The first step in measure was measuring the amount of salt we put in the flask.

# data[].attributes.body
A Mass of salt (NaCl) used 1.14g

B Mass of empty beaker+watch glass 190.90g

C Mass of beaker with salt 190.87g

D Mass of recrystallized salt 1.03g

E Volume of water added 25ml

# data[].attributes.body
A Mass of salt (NaCl) used 1.31g

B Mass of empty beaker+ watch glass 219.98g

C Mass of beaker with salt 221.38g

D Mass of recrystallized salt 1.40g

E Volume of water added 25ml

# data[].attributes.body
A Mass of salt (NaCl) used 1.35g

B Mass of empty beaker 218.25g

C Mass of beaker with salt 219.83g

D Mass of recrystallized salt 1.26g

E Volume of water added 25ml

# data[].attributes.body
To perform and master a recrystallization of an ionic compound

To write a procedure for a simple experiment

To calculate for percent error in an experiment

To understand how results affect percent error
To identify sources of error in experiments

# data[].attributes.body
Recrystallization is one way of isolating an ionic compound from a solution.

If several ionic compounds are present in an aqueous solution, then a

precipitation reaction may be performed to remove the unwanted ions.

In this experiment, a known amount of NaCl will be dissolved in some water,

and then recrystallized by boiling off the water.