Copyright © 2011 InteractiveScienceLessons.com Materials: Procedure: NaHCO 3, CaCl 2 1. 2. 3. 4. 5....
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Copyright © 2011 InteractiveScienceLessons. aterials: Procedure : NaHCO 3 , CaCl 2 1. 2. 3. 4. 5. 6. Before After (goggles) (NaHCO3) (CaCl2) (water) (canister in bag; weigh)
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Transcript of Copyright © 2011 InteractiveScienceLessons.com Materials: Procedure: NaHCO 3, CaCl 2 1. 2. 3. 4. 5....
Copyright © 2011 InteractiveScienceLessons.com
Materials:Procedure:
NaHCO3 , CaCl2
1.
2.
3.
4.
5.
6.
Before After
(goggles)
(NaHCO3)
(CaCl2)
(water)
(canister in bag; weigh)
Copyright © 2011 InteractiveScienceLessons.com
CaCl2 NaHCO3
H2O
CO2
CaCO3
NaClH2O
Hot!
Cold!
Gas
Before
____ grams
After
____ grams
Prediction:
•A physical change is a change in size, shape, color or state of matter.•A chemical change is when a new substance is made by rearranging the atoms. It’s properties are different from the original materials.•Everything from before weighed the same as everything after. This is the Law Of Conservation Of Mass.
Notes:
6. (mix, re-weigh)
Copyright © 2011 InteractiveScienceLessons.com
Clean up
1. Pour out liquid contents of bag2. Throw BAG away3. Rinse canister4. Re-stock box:
• New baggie & Handouts• Canister, goggles, spoon, NaHCO3, CaCl2
