by Megan Huynh [Student FVHS]

Rubber Tongs

2013-11-14 21:10:42 UTC

Flask

2013-11-14 21:10:54 UTC

Watch Glass

2013-11-14 21:11:08 UTC

Graduated Cylinder

2013-11-14 21:11:24 UTC

Beaker

2013-11-14 21:11:45 UTC

Heating Plate

2013-11-14 21:11:49 UTC

Materials

17huynhml267 — 2013-11-18 21:22:43 UTC

NaCI: Mass of about 1-2 grams

Several peices of glassware

Heating plate

Electronic balance

Water: Used about 25mL

Questions and Conclusions:

17huynhml267 — 2013-11-18 21:28:53 UTC

1.Trial #1

Procedure

17huynhml267 — 2013-11-18 21:33:09 UTC

Step 1: We measured the flask and beaker.

Step 2: We measured the salt in the flask.

Step 3: We mixed 25 mL of water with the salt until it dissolved.

Step 4: Then we poured the water into the beaker, then we put the beaker onto a heating plate.

Step 5: Then we waited until the water dissolved and the salt was back into the beaker.

Step 6: We measured the beaker with the salt to see how much salt was either gained or lost in the recrystallization process.

Trial #1 Flow Chart

17huynhml267 — 2013-11-19 01:19:18 UTC

A. 1.69 g of salt

B. Mass of beaker: 142.54 g

C. Mass of beaker with recrystallized NaCI: 144.28 g

D. Mass of recrystallized NaCI: 1.74 g

E. Volume of water: 25 mL

Trial #2 Flow Chart

17huynhml267 — 2013-11-19 01:21:39 UTC

A. 1.65 g of salt

B.Mass of beaker: 144.19 g

C. Mass of beaker with recrystallized NaCI: 145.89 g

D. Mass of recrystallized NaCI: 1.70 g

E. Volume of water: 25 mL

Trial #3 Flow Chart

2013-11-19 21:09:27 UTC

A. 1.50 g of salt

B. Mass of beaker: 101.82 g

C. Mass of beaker with recrystallized NaCl: 103.43 g

D. Mass of recrystallized NaCl: 1.61 g

E. Volume of water: 25 mL

17huynhml267 — 2013-11-19 21:31:21 UTC

Angel Hernandez

Ryan Foster

Megan Huynh

Questions and Conclusions

17hernandezaa18 — 2013-11-20 02:28:42 UTC

1.Trial #3

Questions and Conclusions

17hernandezaa18 — 2013-11-20 02:36:14 UTC

1. Trial #2

Questions and Conclusions

17fosterrc238 — 2013-11-20 02:51:07 UTC

2. If the percent error is positive, it is losing salt. Something that could of happened would be that the salt might have not all been dissolved and some of it was left behind in the flask.

Questions and Conclusions

17fosterrc238 — 2013-11-20 03:09:40 UTC

3. If the percent error is negative, it is gaining salt. something that might of happened would be that there might have already been salt in the beaker or the water from the sink.

Questions and Conclusions

17hernandezaa18 — 2013-11-20 03:15:12 UTC

4. The ESLR'S that were addressed in this activity were working well with others, accessing and processing information utilizing current technology, and applying knowledge to solve problems. We used these ESLR'S by working together as a group to do this project. In order to do this project we had to process our information on this padlet wall which is using current technology because its on the internet. We used knowledge to solve problems because we had to calculate the equations to find the percent of how much salt was gained or lost.